This value set has an inline code system http://hl7.org/fhir/v3/RouteOfAdministration, which defines the following codes:
| Lvl | Code | Display | Definition |
| 1 | _RouteByMethod | RouteByMethod | Route of substance administration classified by administration method. |
| 2 | SOAK | Immersion (soak) | Immersion (soak) |
| 2 | SHAMPOO | Shampoo | Shampoo |
| 2 | TRNSLING | Translingual | Translingual |
| 2 | PO | Swallow, oral | Swallow, oral |
| 2 | GARGLE | Gargle | Gargle |
| 2 | SUCK | Suck, oromucosal | Suck, oromucosal |
| 2 | _Chew | Chew | Chew |
| 3 | CHEW | Chew, oral | Chew, oral |
| 2 | _Diffusion | Diffusion | Diffusion |
| 3 | EXTCORPDIF | Diffusion, extracorporeal | Diffusion, extracorporeal |
| 3 | HEMODIFF | Diffusion, hemodialysis | Diffusion, hemodialysis |
| 3 | TRNSDERMD | Diffusion, transdermal | Diffusion, transdermal |
| 2 | _Dissolve | Dissolve | Dissolve |
| 3 | DISSOLVE | Dissolve, oral | Dissolve, oral |
| 3 | SL | Dissolve, sublingual | Dissolve, sublingual |
| 2 | _Douche | Douche | Douche |
| 3 | DOUCHE | Douche, vaginal | Douche, vaginal |
| 2 | _ElectroOsmosisRoute | ElectroOsmosisRoute | Electro-osmosis |
| 3 | ELECTOSMOS | Electro-osmosis | Electro-osmosis |
| 2 | _Enema | Enema | Enema |
| 3 | ENEMA | Enema, rectal | Enema, rectal |
| 3 | RETENEMA | Enema, rectal retention | Enema, rectal retention |
| 2 | _Flush | Flush | Flush |
| 3 | IVFLUSH | Flush, intravenous catheter | Flush, intravenous catheter |
| 2 | _Implantation | Implantation | Implantation |
| 3 | IDIMPLNT | Implantation, intradermal | Implantation, intradermal |
| 3 | IVITIMPLNT | Implantation, intravitreal | Implantation, intravitreal |
| 3 | SQIMPLNT | Implantation, subcutaneous | Implantation, subcutaneous |
| 2 | _Infusion | Infusion | Infusion |
| 3 | EPI | Infusion, epidural | Infusion, epidural |
| 3 | IA | Infusion, intraarterial catheter | Infusion, intraarterial catheter |
| 3 | IC | Infusion, intracardiac | Infusion, intracardiac |
| 3 | ICOR | Infusion, intracoronary | Infusion, intracoronary |
| 3 | IOSSC | Infusion, intraosseous, continuous | Infusion, intraosseous, continuous |
| 3 | IT | Infusion, intrathecal | Infusion, intrathecal |
| 3 | IV | Infusion, intravenous | Infusion, intravenous |
| 4 | IVC | Infusion, intravenous catheter | Infusion, intravenous catheter |
| 4 | IVCC | Infusion, intravenous catheter, continuous | Infusion, intravenous catheter, continuous |
| 4 | IVCI | Infusion, intravenous catheter, intermittent | Infusion, intravenous catheter, intermittent |
| 4 | PCA | Infusion, intravenous catheter, pca pump | Infusion, intravenous catheter, pca pump |
| 3 | IVASCINFUS | Infusion, intravascular | Infusion, intravascular |
| 3 | SQINFUS | Infusion, subcutaneous | Infusion, subcutaneous |
| 2 | _Inhalation | Inhalation | Inhalation |
| 3 | IPINHL | Inhalation, respiratory | Inhalation, oral |
| 4 | ORIFINHL | Inhalation, oral intermittent flow | Inhalation, oral intermittent flow |
| 4 | REBREATH | Inhalation, oral rebreather mask | Inhalation, oral rebreather mask |
| 3 | IPPB | Inhalation, intermittent positive pressure breathing (ippb) | Inhalation, intermittent positive pressure breathing (ippb) |
| 3 | NASINHL | Inhalation, nasal | Inhalation, nasal |
| 4 | NASINHLC | Inhalation, nasal cannula | Inhalation, nasal, prongs |
| 3 | NEB | Inhalation, nebulization | Inhalation, nebulization |
| 4 | NASNEB | Inhalation, nebulization, nasal | Inhalation, nebulization, nasal |
| 4 | ORNEB | Inhalation, nebulization, oral | Inhalation, nebulization, oral |
| 3 | TRACH | Inhalation, tracheostomy | Inhalation, tracheostomy |
| 3 | VENT | Inhalation, ventilator | Inhalation, ventilator |
| 3 | VENTMASK | Inhalation, ventimask | Inhalation, ventimask |
| 2 | _Injection | Injection | Injection |
| 3 | AMNINJ | Injection, amniotic fluid | Injection, amniotic fluid |
| 3 | BILINJ | Injection, biliary tract | Injection, biliary tract |
| 3 | CHOLINJ | Injection, for cholangiography | Injection, for cholangiography |
| 3 | CERVINJ | Injection, cervical | Injection, cervical |
| 3 | EPIDURINJ | Injection, epidural | Injection, epidural |
| 3 | EPIINJ | Injection, epidural, push | Injection, epidural, push |
| 3 | EPINJSP | Injection, epidural, slow push | Injection, epidural, slow push |
| 3 | EXTRAMNINJ | Injection, extra-amniotic | Injection, extra-amniotic |
| 3 | EXTCORPINJ | Injection, extracorporeal | Injection, extracorporeal |
| 3 | GBINJ | Injection, gastric button | Injection, gastric button |
| 3 | GINGINJ | Injection, gingival | Injection, gingival |
| 3 | BLADINJ | Injection, urinary bladder | Injection, urinary bladder |
| 3 | ENDOSININJ | Injection, endosinusial | Injection, endosinusial |
| 3 | HEMOPORT | Injection, hemodialysis port | Injection, hemodialysis port |
| 3 | IABDINJ | Injection, intra-abdominal | Injection, intra-abdominal |
| 3 | IAINJ | Injection, intraarterial | Injection, intraarterial |
| 4 | IAINJP | Injection, intraarterial, push | Injection, intraarterial, push |
| 4 | IAINJSP | Injection, intraarterial, slow push | Injection, intraarterial, slow push |
| 3 | IARTINJ | Injection, intraarticular | Injection, intraarticular |
| 3 | IBURSINJ | Injection, intrabursal | Injection, intrabursal |
| 3 | ICARDINJ | Injection, intracardiac | Injection, intracardiac |
| 4 | ICARDINJRP | Injection, intracardiac, rapid push | Injection, intracardiac, rapid push |
| 4 | ICARDINJSP | Injection, intracardiac, slow push | Injection, intracardiac, slow push |
| 4 | ICARINJP | Injection, intracardiac, push | Injection, intracardiac, push |
| 3 | ICARTINJ | Injection, intracartilaginous | Injection, intracartilaginous |
| 3 | ICAUDINJ | Injection, intracaudal | Injection, intracaudal |
| 3 | ICAVINJ | Injection, intracavernous | Injection, intracavernous |
| 3 | ICAVITINJ | Injection, intracavitary | Injection, intracavitary |
| 3 | ICEREBINJ | Injection, intracerebral | Injection, intracerebral |
| 3 | ICISTERNINJ | Injection, intracisternal | Injection, intracisternal |
| 3 | ICORONINJ | Injection, intracoronary | Injection, intracoronary |
| 4 | ICORONINJP | Injection, intracoronary, push | Injection, intracoronary, push |
| 3 | ICORPCAVINJ | Injection, intracorpus cavernosum | Injection, intracorpus cavernosum |
| 3 | IDINJ | Injection, intradermal | Injection, intradermal |
| 3 | IDISCINJ | Injection, intradiscal | Injection, intradiscal |
| 3 | IDUCTINJ | Injection, intraductal | Injection, intraductal |
| 3 | IDURINJ | Injection, intradural | Injection, intradural |
| 3 | IEPIDINJ | Injection, intraepidermal | Injection, intraepidermal |
| 3 | IEPITHINJ | Injection, intraepithelial | Injection, intraepithelial |
| 3 | ILESINJ | Injection, intralesional | Injection, intralesional |
| 3 | ILUMINJ | Injection, intraluminal | Injection, intraluminal |
| 3 | ILYMPJINJ | Injection, intralymphatic | Injection, intralymphatic |
| 3 | IM | Injection, intramuscular | Injection, intramuscular |
| 4 | IMD | Injection, intramuscular, deep | Injection, intramuscular, deep |
| 4 | IMZ | Injection, intramuscular, z track | Injection, intramuscular, z track |
| 3 | IMEDULINJ | Injection, intramedullary | Injection, intramedullary |
| 3 | INTERMENINJ | Injection, interameningeal | Injection, interameningeal |
| 3 | INTERSTITINJ | Injection, interstitial | Injection, interstitial |
| 3 | IOINJ | Injection, intraocular | Injection, intraocular |
| 3 | IOSSINJ | Injection, intraosseous | Injection, intraosseous |
| 3 | IOVARINJ | Injection, intraovarian | Injection, intraovarian |
| 3 | IPCARDINJ | Injection, intrapericardial | Injection, intrapericardial |
| 3 | IPERINJ | Injection, intraperitoneal | Injection, intraperitoneal |
| 3 | IPINJ | Injection, intrapulmonary | Injection, intrapulmonary |
| 3 | IPLRINJ | Injection, intrapleural | Injection, intrapleural |
| 3 | IPROSTINJ | Injection, intraprostatic | Injection, intraprostatic |
| 3 | IPUMPINJ | Injection, insulin pump | Injection, insulin pump |
| 3 | ISINJ | Injection, intraspinal | Injection, intraspinal |
| 3 | ISTERINJ | Injection, intrasternal | Injection, intrasternal |
| 3 | ISYNINJ | Injection, intrasynovial | Injection, intrasynovial |
| 3 | ITENDINJ | Injection, intratendinous | Injection, intratendinous |
| 3 | ITESTINJ | Injection, intratesticular | Injection, intratesticular |
| 3 | ITHORINJ | Injection, intrathoracic | Injection, intrathoracic |
| 3 | ITINJ | Injection, intrathecal | Injection, intrathecal |
| 3 | ITUBINJ | Injection, intratubular | Injection, intratubular |
| 3 | ITUMINJ | Injection, intratumor | Injection, intratumor |
| 3 | ITYMPINJ | Injection, intratympanic | Injection, intratympanic |
| 3 | IUINJ | Injection, intrauterine | Injection, intracervical (uterus) |
| 3 | IUINJC | Injection, intracervical (uterus) | Injection, intracervical (uterus) |
| 3 | IURETINJ | Injection, intraureteral, retrograde | Injection, intraureteral, retrograde |
| 3 | IVASCINJ | Injection, intravascular | Injection, intravascular |
| 3 | IVENTINJ | Injection, intraventricular (heart) | Injection, intraventricular (heart) |
| 3 | IVESINJ | Injection, intravesicle | Injection, intravesicle |
| 3 | IVINJ | Injection, intravenous | Injection, intravenous |
| 4 | IVINJBOL | Injection, intravenous, bolus | Injection, intravenous, bolus |
| 4 | IVPUSH | Injection, intravenous, push | Injection, intravenous, push |
| 4 | IVRPUSH | Injection, intravenous, rapid push | Injection, intravenous, rapid push |
| 4 | IVSPUSH | Injection, intravenous, slow push | Injection, intravenous, slow push |
| 3 | IVITINJ | Injection, intravitreal | Injection, intravitreal |
| 3 | PAINJ | Injection, periarticular | Injection, periarticular |
| 3 | PARENTINJ | Injection, parenteral | Injection, parenteral |
| 3 | PDONTINJ | Injection, periodontal | Injection, periodontal |
| 3 | PDPINJ | Injection, peritoneal dialysis port | Injection, peritoneal dialysis port |
| 3 | PDURINJ | Injection, peridural | Injection, peridural |
| 3 | PNINJ | Injection, perineural | Injection, perineural |
| 3 | PNSINJ | Injection, paranasal sinuses | Injection, paranasal sinuses |
| 3 | RBINJ | Injection, retrobulbar | Injection, retrobulbar |
| 3 | SCINJ | Injection, subconjunctival | Injection, subconjunctival |
| 3 | SLESINJ | Injection, sublesional | Injection, sublesional |
| 3 | SOFTISINJ | Injection, soft tissue | Injection, soft tissue |
| 3 | SQ | Injection, subcutaneous | Injection, subcutaneous |
| 3 | SUBARACHINJ | Injection, subarachnoid | Injection, subarachnoid |
| 3 | SUBMUCINJ | Injection, submucosal | Injection, submucosal |
| 3 | TRPLACINJ | Injection, transplacental | Injection, transplacental |
| 3 | TRTRACHINJ | Injection, transtracheal | Injection, transtracheal |
| 3 | URETHINJ | Injection, urethral | Injection, urethral |
| 3 | URETINJ | Injection, ureteral | Injection, ureteral |
| 2 | _Insertion | Insertion | Insertion |
| 3 | CERVINS | Insertion, cervical (uterine) | Insertion, cervical (uterine) |
| 3 | IOSURGINS | Insertion, intraocular, surgical | Insertion, intraocular, surgical |
| 3 | IU | Insertion, intrauterine | Insertion, intrauterine |
| 3 | LPINS | Insertion, lacrimal puncta | Insertion, lacrimal puncta |
| 3 | PR | Insertion, rectal | Insertion, rectal |
| 3 | SQSURGINS | Insertion, subcutaneous, surgical | Insertion, subcutaneous, surgical |
| 3 | URETHINS | Insertion, urethral | Insertion, urethral |
| 3 | VAGINSI | Insertion, vaginal | Insertion, vaginal |
| 2 | _Instillation | Instillation | Instillation |
| 3 | CECINSTL | Instillation, cecostomy | Instillation, cecostomy |
| 3 | EFT | Instillation, enteral feeding tube | Instillation, enteral feeding tube |
| 3 | ENTINSTL | Instillation, enteral | Instillation, enteral |
| 3 | GT | Instillation, gastrostomy tube | Instillation, gastrostomy tube |
| 3 | NGT | Instillation, nasogastric tube | Instillation, nasogastric tube |
| 3 | OGT | Instillation, orogastric tube | Instillation, orogastric tube |
| 3 | BLADINSTL | Instillation, urinary catheter | Instillation, urinary catheter |
| 3 | CAPDINSTL | Instillation, continuous ambulatory peritoneal dialysis port | Instillation, continuous ambulatory peritoneal dialysis port |
| 3 | CTINSTL | Instillation, chest tube | Instillation, chest tube |
| 3 | ETINSTL | Instillation, endotracheal tube | Instillation, endotracheal tube |
| 3 | GJT | Instillation, gastro-jejunostomy tube | Instillation, gastro-jejunostomy tube |
| 3 | IBRONCHINSTIL | Instillation, intrabronchial | Instillation, intrabronchial |
| 3 | IDUODINSTIL | Instillation, intraduodenal | Instillation, intraduodenal |
| 3 | IESOPHINSTIL | Instillation, intraesophageal | Instillation, intraesophageal |
| 3 | IGASTINSTIL | Instillation, intragastric | Instillation, intragastric |
| 3 | IILEALINJ | Instillation, intraileal | Instillation, intraileal |
| 3 | IOINSTL | Instillation, intraocular | Instillation, intraocular |
| 3 | ISININSTIL | Instillation, intrasinal | Instillation, intrasinal |
| 3 | ITRACHINSTIL | Instillation, intratracheal | Instillation, intratracheal |
| 3 | IUINSTL | Instillation, intrauterine | Instillation, intrauterine |
| 3 | JJTINSTL | Instillation, jejunostomy tube | Instillation, jejunostomy tube |
| 3 | LARYNGINSTIL | Instillation, laryngeal | Instillation, laryngeal |
| 3 | NASALINSTIL | Instillation, nasal | Instillation, nasal |
| 3 | NASOGASINSTIL | Instillation, nasogastric | Instillation, nasogastric |
| 3 | NTT | Instillation, nasotracheal tube | Instillation, nasotracheal tube |
| 3 | OJJ | Instillation, orojejunum tube | Instillation, orojejunum tube |
| 3 | OT | Instillation, otic | Instillation, otic |
| 3 | PDPINSTL | Instillation, peritoneal dialysis port | Instillation, peritoneal dialysis port |
| 3 | PNSINSTL | Instillation, paranasal sinuses | Instillation, paranasal sinuses |
| 3 | RECINSTL | Instillation, rectal | Instillation, rectal |
| 4 | RECTINSTL | Instillation, rectal tube | Instillation, rectal tube |
| 3 | SININSTIL | Instillation, sinus, unspecified | Instillation, sinus, unspecified |
| 3 | SOFTISINSTIL | Instillation, soft tissue | Instillation, soft tissue |
| 3 | TRACHINSTL | Instillation, tracheostomy | Instillation, tracheostomy |
| 3 | TRTYMPINSTIL | Instillation, transtympanic | Instillation, transtympanic |
| 3 | URETHINSTL | instillation, urethral | Instillation, urethral |
| 2 | _IontophoresisRoute | IontophoresisRoute | Iontophoresis |
| 3 | IONTO | Topical application, iontophoresis | Topical application, iontophoresis |
| 2 | _Irrigation | Irrigation | Irrigation |
| 3 | GUIRR | Irrigation, genitourinary | Irrigation, genitourinary |
| 3 | IGASTIRR | Irrigation, intragastric | Irrigation, intragastric |
| 3 | ILESIRR | Irrigation, intralesional | Irrigation, intralesional |
| 3 | IOIRR | Irrigation, intraocular | Irrigation, intraocular |
| 3 | BLADIRR | Irrigation, urinary bladder | Irrigation, urinary bladder |
| 4 | BLADIRRC | Irrigation, urinary bladder, continuous | Irrigation, urinary bladder, continuous |
| 4 | BLADIRRT | Irrigation, urinary bladder, tidal | Irrigation, urinary bladder, tidal |
| 3 | RECIRR | Irrigation, rectal | Irrigation, rectal |
| 2 | _LavageRoute | LavageRoute | Lavage |
| 3 | IGASTLAV | Lavage, intragastric | Lavage, intragastric |
| 2 | _MucosalAbsorptionRoute | MucosalAbsorptionRoute | Mucosal absorption |
| 3 | IDOUDMAB | Mucosal absorption, intraduodenal | Mucosal absorption, intraduodenal |
| 3 | ITRACHMAB | Mucosal absorption, intratracheal | Mucosal absorption, intratracheal |
| 3 | SMUCMAB | Mucosal absorption, submucosal | Mucosal absorption, submucosal |
| 2 | _Nebulization | Nebulization | Nebulization |
| 3 | ETNEB | Nebulization, endotracheal tube | Nebulization, endotracheal tube |
| 2 | _Rinse | Rinse | Rinse |
| 3 | DENRINSE | Rinse, dental | Rinse, dental |
| 3 | ORRINSE | Rinse, oral | Rinse, oral |
| 2 | _SuppositoryRoute | SuppositoryRoute | Suppository |
| 3 | URETHSUP | Suppository, urethral | Suppository, urethral |
| 2 | _Swish | Swish | Swish |
| 3 | SWISHSPIT | Swish and spit out, oromucosal | Swish and spit out, oromucosal |
| 3 | SWISHSWAL | Swish and swallow, oromucosal | Swish and swallow, oromucosal |
| 2 | _TopicalAbsorptionRoute | TopicalAbsorptionRoute | Topical absorption |
| 3 | TTYMPTABSORP | Topical absorption, transtympanic | Topical absorption, transtympanic |
| 2 | _TopicalApplication | TopicalApplication | Topical application |
| 3 | DRESS | Topical application, soaked dressing | Topical application, soaked dressing |
| 3 | SWAB | Topical application, swab | Topical application, swab |
| 3 | TOPICAL | Topical | Topical |
| 3 | BUC | Topical application, buccal | Topical application, buccal |
| 3 | CERV | Topical application, cervical | Topical application, cervical |
| 3 | DEN | Topical application, dental | Topical application, dental |
| 3 | GIN | Topical application, gingival | Topical application, gingival |
| 3 | HAIR | Topical application, hair | Topical application, hair |
| 3 | ICORNTA | Topical application, intracorneal | Topical application, intracorneal |
| 3 | ICORONTA | Topical application, intracoronal (dental) | Topical application, intracoronal (dental) |
| 3 | IESOPHTA | Topical application, intraesophageal | Topical application, intraesophageal |
| 3 | IILEALTA | Topical application, intraileal | Topical application, intraileal |
| 3 | ILTOP | Topical application, intralesional | Topical application, intralesional |
| 3 | ILUMTA | Topical application, intraluminal | Topical application, intraluminal |
| 3 | IOTOP | Topical application, intraocular | Topical application, intraocular |
| 3 | LARYNGTA | Topical application, laryngeal | Topical application, laryngeal |
| 3 | MUC | Topical application, mucous membrane | Topical application, mucous membrane |
| 3 | NAIL | Topical application, nail | Topical application, nail |
| 3 | NASAL | Topical application, nasal | Topical application, nasal |
| 3 | OPTHALTA | Topical application, ophthalmic | Topical application, ophthalmic |
| 3 | ORALTA | Topical application, oral | Topical application, oral |
| 3 | ORMUC | Topical application, oromucosal | Topical application, oromucosal |
| 3 | OROPHARTA | Topical application, oropharyngeal | Topical application, oropharyngeal |
| 3 | PERIANAL | Topical application, perianal | Topical application, perianal |
| 3 | PERINEAL | Topical application, perineal | Topical application, perineal |
| 3 | PDONTTA | Topical application, periodontal | Topical application, periodontal |
| 3 | RECTAL | Topical application, rectal | Topical application, rectal |
| 3 | SCALP | Topical application, scalp | Topical application, scalp |
| 3 | OCDRESTA | Occlusive dressing technique | Occlusive dressing technique |
| 3 | SKIN | Topical application, skin | Topical application, skin |
| 3 | SUBCONJTA | Subconjunctival | Subconjunctival |
| 3 | TMUCTA | Topical application, transmucosal | Topical application, transmucosal |
| 3 | VAGINS | Topical application, vaginal | Insertion, vaginal |
| 2 | INSUF | Insufflation | Insufflation |
| 2 | TRNSDERM | Transdermal | Transdermal |
| 1 | _RouteBySite | RouteBySite | Route of substance administration classified by site. |
| 2 | _AmnioticFluidSacRoute | AmnioticFluidSacRoute | Amniotic fluid sac |
| 2 | _BiliaryRoute | BiliaryRoute | Biliary tract |
| 2 | _BodySurfaceRoute | BodySurfaceRoute | Body surface |
| 2 | _BuccalMucosaRoute | BuccalMucosaRoute | Buccal mucosa |
| 2 | _CecostomyRoute | CecostomyRoute | Cecostomy |
| 2 | _CervicalRoute | CervicalRoute | Cervix of the uterus |
| 2 | _EndocervicalRoute | EndocervicalRoute | Endocervical |
| 2 | _EnteralRoute | EnteralRoute | Enteral |
| 2 | _EpiduralRoute | EpiduralRoute | Epidural |
| 2 | _ExtraAmnioticRoute | ExtraAmnioticRoute | Extra-amniotic |
| 2 | _ExtracorporealCirculationRoute | ExtracorporealCirculationRoute | Extracorporeal circulation |
| 2 | _GastricRoute | GastricRoute | Gastric |
| 2 | _GenitourinaryRoute | GenitourinaryRoute | Genitourinary |
| 2 | _GingivalRoute | GingivalRoute | Gingival |
| 2 | _HairRoute | HairRoute | Hair |
| 2 | _InterameningealRoute | InterameningealRoute | Interameningeal |
| 2 | _InterstitialRoute | InterstitialRoute | Interstitial |
| 2 | _IntraabdominalRoute | IntraabdominalRoute | Intra-abdominal |
| 2 | _IntraarterialRoute | IntraarterialRoute | Intra-arterial |
| 2 | _IntraarticularRoute | IntraarticularRoute | Intraarticular |
| 2 | _IntrabronchialRoute | IntrabronchialRoute | Intrabronchial |
| 2 | _IntrabursalRoute | IntrabursalRoute | Intrabursal |
| 2 | _IntracardiacRoute | IntracardiacRoute | Intracardiac |
| 2 | _IntracartilaginousRoute | IntracartilaginousRoute | Intracartilaginous |
| 2 | _IntracaudalRoute | IntracaudalRoute | Intracaudal |
| 2 | _IntracavernosalRoute | IntracavernosalRoute | Intracavernosal |
| 2 | _IntracavitaryRoute | IntracavitaryRoute | Intracavitary |
| 2 | _IntracerebralRoute | IntracerebralRoute | Intracerebral |
| 2 | _IntracervicalRoute | IntracervicalRoute | Intracervical |
| 2 | _IntracisternalRoute | IntracisternalRoute | Intracisternal |
| 2 | _IntracornealRoute | IntracornealRoute | Intracorneal |
| 2 | _IntracoronalRoute | IntracoronalRoute | Intracoronal (dental) |
| 2 | _IntracoronaryRoute | IntracoronaryRoute | Intracoronary |
| 2 | _IntracorpusCavernosumRoute | IntracorpusCavernosumRoute | Intracorpus cavernosum |
| 2 | _IntradermalRoute | IntradermalRoute | Intradermal |
| 2 | _IntradiscalRoute | IntradiscalRoute | Intradiscal |
| 2 | _IntraductalRoute | IntraductalRoute | Intraductal |
| 2 | _IntraduodenalRoute | IntraduodenalRoute | Intraduodenal |
| 2 | _IntraduralRoute | IntraduralRoute | Intradural |
| 2 | _IntraepidermalRoute | IntraepidermalRoute | Intraepidermal |
| 2 | _IntraepithelialRoute | IntraepithelialRoute | Intraepithelial |
| 2 | _IntraesophagealRoute | IntraesophagealRoute | Intraesophageal |
| 2 | _IntragastricRoute | IntragastricRoute | Intragastric |
| 2 | _IntrailealRoute | IntrailealRoute | Intraileal |
| 2 | _IntralesionalRoute | IntralesionalRoute | Intralesional |
| 2 | _IntraluminalRoute | IntraluminalRoute | Intraluminal |
| 2 | _IntralymphaticRoute | IntralymphaticRoute | Intralymphatic |
| 2 | _IntramedullaryRoute | IntramedullaryRoute | Intramedullary |
| 2 | _IntramuscularRoute | IntramuscularRoute | Intramuscular |
| 2 | _IntraocularRoute | IntraocularRoute | Intraocular |
| 2 | _IntraosseousRoute | IntraosseousRoute | Intraosseous |
| 2 | _IntraovarianRoute | IntraovarianRoute | Intraovarian |
| 2 | _IntrapericardialRoute | IntrapericardialRoute | Intrapericardial |
| 2 | _IntraperitonealRoute | IntraperitonealRoute | Intraperitoneal |
| 2 | _IntrapleuralRoute | IntrapleuralRoute | Intrapleural |
| 2 | _IntraprostaticRoute | IntraprostaticRoute | Intraprostatic |
| 2 | _IntrapulmonaryRoute | IntrapulmonaryRoute | Intrapulmonary |
| 2 | _IntrasinalRoute | IntrasinalRoute | Intrasinal |
| 2 | _IntraspinalRoute | IntraspinalRoute | Intraspinal |
| 2 | _IntrasternalRoute | IntrasternalRoute | Intrasternal |
| 2 | _IntrasynovialRoute | IntrasynovialRoute | Intrasynovial |
| 2 | _IntratendinousRoute | IntratendinousRoute | Intratendinous |
| 2 | _IntratesticularRoute | IntratesticularRoute | Intratesticular |
| 2 | _IntrathecalRoute | IntrathecalRoute | Intrathecal |
| 2 | _IntrathoracicRoute | IntrathoracicRoute | Intrathoracic |
| 2 | _IntratrachealRoute | IntratrachealRoute | Intratracheal |
| 2 | _IntratubularRoute | IntratubularRoute | Intratubular |
| 2 | _IntratumorRoute | IntratumorRoute | Intratumor |
| 2 | _IntratympanicRoute | IntratympanicRoute | Intratympanic |
| 2 | _IntrauterineRoute | IntrauterineRoute | Intrauterine |
| 2 | _IntravascularRoute | IntravascularRoute | Intravascular |
| 2 | _IntravenousRoute | IntravenousRoute | Intravenous |
| 2 | _IntraventricularRoute | IntraventricularRoute | Intraventricular |
| 2 | _IntravesicleRoute | IntravesicleRoute | Intravesicle |
| 2 | _IntravitrealRoute | IntravitrealRoute | Intravitreal |
| 2 | _JejunumRoute | JejunumRoute | Jejunum |
| 2 | _LacrimalPunctaRoute | LacrimalPunctaRoute | Lacrimal puncta |
| 2 | _LaryngealRoute | LaryngealRoute | Laryngeal |
| 2 | _LingualRoute | LingualRoute | Lingual |
| 2 | _MucousMembraneRoute | MucousMembraneRoute | Mucous membrane |
| 2 | _NailRoute | NailRoute | Nail |
| 2 | _NasalRoute | NasalRoute | Nasal |
| 2 | _OphthalmicRoute | OphthalmicRoute | Ophthalmic |
| 2 | _OralRoute | OralRoute | Oral |
| 2 | _OromucosalRoute | OromucosalRoute | Oromucosal |
| 2 | _OropharyngealRoute | OropharyngealRoute | Oropharyngeal |
| 2 | _OticRoute | OticRoute | Otic |
| 2 | _ParanasalSinusesRoute | ParanasalSinusesRoute | Paranasal sinuses |
| 2 | _ParenteralRoute | ParenteralRoute | Parenteral |
| 2 | _PerianalRoute | PerianalRoute | Perianal |
| 2 | _PeriarticularRoute | PeriarticularRoute | Periarticular |
| 2 | _PeriduralRoute | PeriduralRoute | Peridural |
| 2 | _PerinealRoute | PerinealRoute | Perineal |
| 2 | _PerineuralRoute | PerineuralRoute | Perineural |
| 2 | _PeriodontalRoute | PeriodontalRoute | Periodontal |
| 2 | _PulmonaryRoute | PulmonaryRoute | Pulmonary |
| 2 | _RectalRoute | RectalRoute | Rectal |
| 2 | _RespiratoryTractRoute | RespiratoryTractRoute | Respiratory tract |
| 2 | _RetrobulbarRoute | RetrobulbarRoute | Retrobulbar |
| 2 | _ScalpRoute | ScalpRoute | Scalp |
| 2 | _SinusUnspecifiedRoute | SinusUnspecifiedRoute | Sinus, unspecified |
| 2 | _SkinRoute | SkinRoute | Skin |
| 2 | _SoftTissueRoute | SoftTissueRoute | Soft tissue |
| 2 | _SubarachnoidRoute | SubarachnoidRoute | Subarachnoid |
| 2 | _SubconjunctivalRoute | SubconjunctivalRoute | Subconjunctival |
| 2 | _SubcutaneousRoute | SubcutaneousRoute | Subcutaneous |
| 2 | _SublesionalRoute | SublesionalRoute | Sublesional |
| 2 | _SublingualRoute | SublingualRoute | Sublingual |
| 2 | _SubmucosalRoute | SubmucosalRoute | Submucosal |
| 2 | _TracheostomyRoute | TracheostomyRoute | Tracheostomy |
| 2 | _TransmucosalRoute | TransmucosalRoute | Transmucosal |
| 2 | _TransplacentalRoute | TransplacentalRoute | Transplacental |
| 2 | _TranstrachealRoute | TranstrachealRoute | Transtracheal |
| 2 | _TranstympanicRoute | TranstympanicRoute | Transtympanic |
| 2 | _UreteralRoute | UreteralRoute | Ureteral |
| 2 | _UrethralRoute | UrethralRoute | Urethral |
| 2 | _UrinaryBladderRoute | UrinaryBladderRoute | Urinary bladder |
| 2 | _UrinaryTractRoute | UrinaryTractRoute | Urinary tract |
| 2 | _VaginalRoute | VaginalRoute | Vaginal |
| 2 | _VitreousHumourRoute | VitreousHumourRoute | Vitreous humour |