This code system http://hl7.org/fhir/uv/phd/CodeSystem/ASN1ToHL7 defines the following codes:
| Code | Display | Definition |
| 67925.0 | Mains power state | Indicates whether the PHD is on or off mains power |
| 67925.1 | Battery state | Indicates whether the PHD is on or off Battery power |
| 67925.8 | Charging at full rate | Indicates whether the PHD battery is charging at maximum rate |
| 67925.9 | Charging at trickle rate | Indicates whether the PHD battery is charging at a trickle rate |
| 67925.10 | Charging state | Indicates whether the PHD battery charging is on or off |
| 532354.0 | If bit is cleared device is regulated | Indicates whether the device is regulated |
| 68219.0 | Real-time clock | Indicates real time clock is supported |
| 68219.1 | PHG set-time | Indicates support for the PHG to set the time |
| 68219.2 | Relative Time | Indicates Relative Time is supported |
| 68219.3 | Hi-Res Relative Time | Indicates Hi-Res Relative Time is supported |
| 68219.4 | Sync Absolute Time | Indicates that syncing the absolute time is supported |
| 68219.5 | Sync Relative Time | Indicates that syncing the relative time is supported |
| 68219.6 | Sync Hi-Res Relative Time | Indicates that syncing hi-res relative time is supported |
| 68219.7 | Base Offset Time | Indicates that the real-time clock supports base offset time |
| 68219.8 | Absolute Time Synced | Indicates the absolute time has been synced |
| 68219.9 | Relative Time Synced | Indicates the relative time has been synced |
| 68219.10 | Hi-Res Relative Time Synced | Indicates the hi-res time has been synced |
| 68219.11 | PHG Set-Time Requested | PHG Requested to set the time |
| 68219.12 | Syncing base-offset time support | Indicates that syncing base-offset time is supported |
| 68219.13 | Base-Offset Time Synced | Indicates that base-offset time has been synced |
| 68219.14 | Base-Offset Time UTC Aligned | Indicates that base-offset time is aligned with UTC time standard |
| 68219.15 | Daylight Savings Time Rules Understood | Indicates support for daylight savings time rules |
| 67846.0 | All alerts disabled | Indicates both the high and the low limit alerts are disabled |
| 67846.1 | Low limit alert disabled | Indicates the low limit alert is disabled |
| 67846.2 | High limit alert disabled | Indicates the high limit alert is disabled |
| 150604.0 | Device not connected to sensor | Indicates the device is not connected with the sensor |
| 150604.1 | Sensor has malfunctioned | Indicates the sensor has malfunctioned |
| 150604.2 | Sensor incorrectly placed on user | Indicates the sensor is not correctly placed on the user |
| 150604.3 | Unsupported sensor | Indicates the sensor connected to the device is unsupported |
| 150604.4 | Sensor off | Indicates the sensor is not connected to the user |
| 150604.5 | Sensor interference | Indicates the sensor is experiencing interference |
| 150604.6 | Searching for signal | Indicates the sensor is searching for a signal |
| 150604.7 | Signal pulse questionable | Indicates a questionable pulse has been detected |
| 150604.8 | Non pulsatile signal | Indicates a non pulsatile signal has been detected |
| 150604.9 | Signal erratic | Indicates a signal has been discovered, but it is erratic |
| 150604.10 | Signal low perfusion | Indicates the signal is experiencing low perfusion |
| 150604.11 | Signal is poor | Indicates the signal has been discovered, but it is poor |
| 150604.12 | Signal inadequate | Indicates the signal has been discovered, but it is inadequate |
| 150604.13 | Signal experiencing processing irregularity | Indicates the signal has been discovered, but is experiencing processing irregularity |
| 150604.14 | Device malfunction | Indicates a device malfunction has occurred |
| 150604.15 | Device extended update | Indicates an extended display update is in progress on device |
| 150605.0 | Pulse quality nominal | Indicates no abnormalities have been detected by the sensor |
| 150605.1 | Pulse quality marginal | Indicates the pulse profusion or quality is marginal |
| 150605.2 | Pulse quality minimal | Indicates the pulse profusion or quality is minimal |
| 150605.3 | Pulse quality unacceptable | Indicates the pulse profusion or quality is unacceptable |
| 8410584.0 | Lead wire loss | Loss of unspecified lead wire or electrode connection |
| 8410584.1 | Lead signal loss | Loss of unspecified lead signal |
| 8410584.2 | Lead wire loss first-lead | Loss of 1st lead wire or electrode connection |
| 8410584.3 | Lead signal loss first-lead | Loss of 1st lead signal |
| 8410584.4 | Lead wire loss second-lead | Loss of 2nd lead wire or electrode connection |
| 8410584.5 | Lead signal loss second-lead | Loss of 2nd lead signal |
| 8410584.6 | Lead wire loss third-lead | Loss of 3rd lead wire or electrode connection |
| 8410584.7 | Lead signal loss third-lead | Loss of 3rd lead signal |
| 8417752.0 | Battery low | The device battery is low |
| 8417752.1 | Sensor malfunction | The sensor has malfunctioned |
| 8417752.2 | Not enough blood in sample | The sensor's sample size is insufficient |
| 8417752.3 | Sensor strip insertion | The test strip was inserted incorrectly |
| 8417752.4 | Sensor strip type incorrect | The test strip type is incompatable with the sensor |
| 8417752.5 | Sensor result too high | The value reported by the sensor is too high |
| 8417752.6 | Sensor result too low | The value reported by the sensor is too low |
| 8417752.7 | Sensor temp too high | The temperature is too high |
| 8417752.8 | Sensor temp too low | The temperature is too low |
| 8417752.9 | Sensor read interrupt | The read process was interrupted |
| 8417752.10 | General Device Fault | General Device Fault |
| 8417752.11 | Sensor temp out of range | The temperature is out of range |
| 8417909.0 | INR device battery low | The INR device battery is low |
| 8417909.1 | Sensor malfunction | The INR device sensor has malfunctioned |
| 8417909.2 | Not enough blood in sample | The sample size was insufficient |
| 8417909.3 | INR sensor strip insertion | The test script was inserted incorrectly |
| 8417909.4 | INR sensor strip type incorrect | The test strip used is not compatible with the INR |
| 8417909.5 | INR sensor result too high | The test result is too high |
| 8417909.6 | INR sensor result too low | The test result is too low |
| 8417909.7 | INR sensor temp too high | The temperature is too high |
| 8417909.8 | INR sensor temp too low | The temperature is too low |
| 8417909.9 | INR sensor read interrupt | The read process was interrupted |
| 8417909.10 | INR device general fault | General device fault |
| 8417909.11 | INR sensor calibration due | The INR sensor calibration is due |
| 8408608.0 | Undetermined device status | Undetermined device status event |
| 8408608.1 | Device status reset | Device reset |
| 8408608.5 | Device status error | Device error |
| 8408608.6 | Device status error mechanical | Mechanical error |
| 8408608.7 | Device status error electronic | Electronic error |
| 8408608.8 | Device status error software | Software error |
| 8408608.9 | Device status error battery | Battery error |
| 8408608.15 | Device status service | Undetermined device status event |
| 8408608.16 | Device status service time-sync required | Time sync service required |
| 8408608.17 | Device status service calibration required | Calibration required |
| 8408608.18 | Device status service replentishment required | Replentishment required |
| 8408608.25 | Device status battery low | Battery power is too low |
| 8408608.26 | Device status battery depleted | Battery is depleted |
| 8408608.27 | Device status battery replaced | Battery has been replaced |
| 8408608.28 | Device status battery interrupted | Battery was interrupted |
| 8418060.0 | Sensor session stopped | Session stopped |
| 8418060.2 | Sensor type incorrect | Sensor type incorrect for device |
| 8418060.3 | Sensor malfunction | The sensor malfunctioned |
| 8418060.4 | Device specific alert | Device specific alert |
| 8418060.7 | Sensor calibration not allowed | Calibrating the sensor is not allowed |
| 8418060.8 | Sensor calibration recommended | Calibrating the sensor is recommended |
| 8418060.9 | Sensor calibration required | Calibrating the sensor is required |
| 8418060.10 | Sensor temp too high | Temperature is too high for a valid result |
| 8418060.11 | Sensor temp too low | Temperature is too low for a valid result |
| 8418060.12 | Sensor result below patient level | Sensor result below the Patient Low level |
| 8418060.13 | Sensor result above patient level | Sensor result above the Patient High level |
| 8418060.14 | Sensor low hypo | Sensor result below the Hypo level |
| 8418060.15 | Sensor result hyper | Sensor result above the Hyper level |
| 8418060.16 | Sensor rate decrease exceeded | The sensor rate of decrease has been exceeded |
| 8418060.17 | Sensor rate increase exceeded | The sensor rate of increase has been exceeded |
| 8418060.18 | Sensor result too low | Sensor result is lower than the device can process |
| 8418060.19 | Sensor result too high | Sensor result is higher than the device can process |
| 8418060.20 | Sensor com out of range | The sensor communication is out of range |
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