S44.02XA — Injury of ulnar nerve at upper arm level, left arm, initial encounter
Is S44.02XA billable?
Yes — S44.02XA is billable for FY2027. S44.02XA is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S44.02XA may be submitted for encounters from October 1, 2026 through September 30, 2027.
S44.02XA at a glance
| Code | S44.02XA |
|---|---|
| Description | Injury of ulnar nerve at upper arm level, left arm, 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 S44.02XA?
In S44.02XA, the 7th character A means initial encounter. The 7th character is required for S44.02XA to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S44.02XA group to?
S44.02XA sits in MDC 01 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.
- 073Cranial and Peripheral Nerve Disorders with MCCmedical
- 074Cranial and Peripheral Nerve Disorders without MCCmedical
How is S44.02XA listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S44.0, the nearest indexed parent of S44.02XA. Use them to find the family, then select the specific code.
- Injury › nerve NEC › ulnar › arm
Excludes1 — never code together — inherited from S44.0
The conditions below can never be reported together with S44.02XA on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- ulnar nerve NOS (S54.0)
Use additional code — inherited from Chapter 19
Report an additional code alongside S44.02XA to fully describe the condition. S44.02XA 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 S44.02XA, but a patient may have both at the same time. When documentation supports it, S44.02XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S40-S49
The conditions below are not part of S44.02XA, but a patient may have both at the same time. When documentation supports it, S44.02XA and the excluded code may both be reported.
Excludes2 — not included here — inherited from S44
The conditions below are not part of S44.02XA, but a patient may have both at the same time. When documentation supports it, S44.02XA and the excluded code may both be reported.
- injury of brachial plexus (S14.3-)
Code also — inherited from S44
Two codes may be needed to describe the condition fully. Whether S44.02XA is sequenced first depends on the reason for the encounter.
- any associated open wound (S41.-)
How long has S44.02XA existed?
S44.02XA 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.