S90.541A — External constriction, right ankle, initial encounter
Is S90.541A billable?
Yes — S90.541A is billable for FY2027. S90.541A is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S90.541A may be submitted for encounters from October 1, 2026 through September 30, 2027.
S90.541A at a glance
| Code | S90.541A |
|---|---|
| Description | External constriction, right ankle, 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 S90.541A?
In S90.541A, the 7th character A means initial encounter. The 7th character is required for S90.541A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S90.541A group to?
S90.541A sits in MDC 09 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.
- 604Trauma to the Skin, Subcutaneous Tissue and Breast with MCCmedical
- 605Trauma to the Skin, Subcutaneous Tissue and Breast without MCCmedical
How is S90.541A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S90.54, the nearest indexed parent of S90.541A. Use them to find the family, then select the specific code.
- Constriction › external › ankle
Use additional code — inherited from Chapter 19
Report an additional code alongside S90.541A to fully describe the condition. S90.541A 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 S90.541A, but a patient may have both at the same time. When documentation supports it, S90.541A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S90-S99
The conditions below are not part of S90.541A, but a patient may have both at the same time. When documentation supports it, S90.541A and the excluded code may both be reported.
How long has S90.541A existed?
S90.541A 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.