S44.0 – Injury of ulnar nerve at upper arm level
ICD-10-CM 2027 diagnosis code · Injuries to the shoulder and upper arm
- Code
S44.0(claims format:S440)- Description
- Injury of ulnar nerve at upper arm level
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
- Block
- S40-S49 Injuries to the shoulder and upper arm
- Parent codes
- S44
Billable codes under S44.0
S44.0 is a header code and cannot be used on claims. Choose the most specific code:
- S44.00 – Injury of ulnar nerve at upper arm level, unspecified armHeader (more codes below)
- S44.01 – Injury of ulnar nerve at upper arm level, right armHeader (more codes below)
- S44.02 – Injury of ulnar nerve at upper arm level, left armHeader (more codes below)
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
A | initial encounter |
D | subsequent encounter |
S | sequela |
Notes for S44.0
- ulnar nerve NOS (S54.0)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
S44 – Injury of nerves at shoulder and upper arm level
- injury of brachial plexus (S14.3-)
- any associated open wound (S41.-)
- The appropriate 7th character is to be added to each code from category S44
Block S40-S49
- injuries of axilla
- injuries of scapular region
Index terms for S44.0
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in S44
- S44.1 – Injury of median nerve at upper arm levelHeader
- S44.2 – Injury of radial nerve at upper arm levelHeader
- S44.3 – Injury of axillary nerveHeader
- S44.4 – Injury of musculocutaneous nerveHeader
- S44.5 – Injury of cutaneous sensory nerve at shoulder and upper arm levelHeader
- S44.8 – Injury of other nerves at shoulder and upper arm levelHeader
- S44.9 – Injury of unspecified nerve at shoulder and upper arm levelHeader
Frequently asked questions
What is ICD-10 code S44.0?
S44.0 is the ICD-10-CM code for injury of ulnar nerve at upper arm level, in the block S40-S49 (Injuries to the shoulder and upper arm).
Is S44.0 a billable code?
No. S44.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does S44.0 belong to?
It belongs to category S44 – Injury of nerves at shoulder and upper arm level.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.