T23.312A — Burn of third degree of left thumb (nail), initial encounter
Is T23.312A billable?
Yes — T23.312A is billable for FY2027. T23.312A is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T23.312A may be submitted for encounters from October 1, 2026 through September 30, 2027.
T23.312A at a glance
| Code | T23.312A |
|---|---|
| Description | Burn of third degree of left thumb (nail), 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 T23.312A?
In T23.312A, the 7th character A means initial encounter. The 7th character is required for T23.312A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T23.312A group to?
T23.312A sits in MDC 22 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.
- 927Extensive Burns or Full Thickness Burns with MV >96 Hours with Skin Graftsurgical
- 933Extensive Burns or Full Thickness Burns with MV >96 Hours without Skin Graftmedical
As a secondary diagnosis, T23.312A is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG. It also carries Hospital-Acquired Condition category 05.
How is T23.312A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T23.312, the nearest indexed parent of T23.312A. Use them to find the family, then select the specific code.
- Burn › thumb › left › third degree (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)
Use additional code — inherited from Chapter 19
Report an additional code alongside T23.312A to fully describe the condition. T23.312A is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T20-T25
Report an additional code alongside T23.312A to fully describe the condition. T23.312A is sequenced first.
Use additional code — inherited from T23.3
Report an additional code alongside T23.312A to fully describe the condition. T23.312A is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T23.312A, but a patient may have both at the same time. When documentation supports it, T23.312A and the excluded code may both be reported.
How long has T23.312A existed?
T23.312A 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.