---
agentTools:
  projectIndex: https://developer.validic.com/llms.txt
---

# CGM Model Added to Inform API

On 01/14/2025 the following resource change will be made to the Inform API.

**New Resource:**\
Dexcom CGM

**Deprecated Resource:**\
Dexcom Intraday (support will end July 15, 2025)

**Affected Action:**\
Receiving High-Frequency Dexcom Data

The following integrations will support this resource:

| Integration | Device                                                                   | Metric         |
| :---------- | :----------------------------------------------------------------------- | :------------- |
| Dexcom      | Dexcom G6 CGM System, Dexcom G7 CGM System                               | blood\_glucose |
| Abbott      | Abbott Freestyle Libre 2 CGM System, Abbott Freestyle Libre 3 CGM System | blood\_glucose |

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What To Expect:

* **Same Data Delivery Schedule:** No changes will be made to the delivery schedule for Dexcom records. Dexcom high-frequency data will continue to be reported hourly with a one-hour delay from Dexcom.
* **New Data Format:** The CGM resource utilizes a different data model than Intraday. Familiarize yourself with the new structure outlined in the provided examples and documentation links.
* **Cumulative Updates:** Each CGM record for a given UTC day will be cumulative, including all time/value pairs for that day, with the record size growing until the day ends.
* **Checksum Identification:** Use the "checksum" field to track updates to a CGM record throughout the day.\
  More Time Details: Inform receives two representations of time from Dexcom (`time` and `display_time`) and both are reported for each CGM reading value. Also, the top-level of the CGM record includes `start_time` and `end_time` fields that define the UTC day that the CGM record represents.
* **Duplicate Records:** From January 14, 2025 through July 15, 2025, both CGM and Intraday records will report the same Dexcom high-frequency readings if your stream configuration sends both event resource types.

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For more information:

* Refer to the provided documentation:
  * CGM API Specification: <https://helpdocs.validic.com/reference/cgm>
  * Dexcom Integration Documentation: <https://help.validic.com/space/VCS/3599859715/Dexcom+API+Integration+for+Developers>
  * Dexcom CGM KBA: <https://help.validic.com/space/VCS/3927703592/Things+to+know+about+Validic-+Dexcom+Integration>
* Stay up to date by monitoring our Status Alert:  <https://trust.validic.com/incidents/5s8pczrh0v5q>
* Contact our support team at <support@validic.com>.