T73.2XXA — Exhaustion due to exposure, initial encounter
Is T73.2XXA billable?
Yes — T73.2XXA is billable for FY2027. T73.2XXA is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T73.2XXA may be submitted for encounters from October 1, 2026 through September 30, 2027.
T73.2XXA at a glance
| Code | T73.2XXA |
|---|---|
| Description | Exhaustion due to exposure, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in T73.2XXA?
In T73.2XXA, the 7th character A means initial encounter. The 7th character is required for T73.2XXA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T73.2XXA group to?
T73.2XXA sits in MDC 21 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 922Other Injury, Poisoning and Toxic Effect Diagnoses with MCCmedical
- 923Other Injury, Poisoning and Toxic Effect Diagnoses without MCCmedical
How is T73.2XXA listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T73.2, the nearest indexed parent of T73.2XXA. Use them to find the family, then select the specific code.
- Exposure › exhaustion due to (to)
- Overexposure › exhaustion (effects)
- Exhaustion, exhaustive › due to › exposure (physical NEC)
Use additional code — inherited from Chapter 19
Report an additional code alongside T73.2XXA to fully describe the condition. T73.2XXA is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T73.2XXA, but a patient may have both at the same time. When documentation supports it, T73.2XXA and the excluded code may both be reported.
Code also — inherited from T66-T78
Two codes may be needed to describe the condition fully. Whether T73.2XXA is sequenced first depends on the reason for the encounter.
- , if applicable, place of occurrence, such as:
- highway rest stop (Y92.523)
- school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
- service areas as the place of occurrence of the external cause (Y92.52-)
- single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
- transport vehicle as the place of occurrence of the external cause (Y92.81-)
How long has T73.2XXA existed?
T73.2XXA has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.