When is ICD-10 code S44.9 used?

Doctors, hospitals, and insurers may use ICD-10 code S44.9 when recording injury of unspecified nerve at shoulder and upper arm level in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code S44.9 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code S44.9: Injury of unspecified nerve at shoulder and upper arm level

Name: ICD-10 Code S44.9: Injury of unspecified nerve at shoulder and upper arm level
Creator: HealthAssure Clinical Team
Published: 2026-05-26T05:25:39.445Z

S44.9 is an ICD-10 diagnosis entry used to group records related to Injury of unspecified nerve at shoulder and upper arm level. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

When is it used?

May be used when a clinician documents injury of unspecified nerve at shoulder and upper arm level in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

19Injury, poisoning and certain other consequences of external causes (S00-T88)

block

S40-S49Injuries to the shoulder and upper arm

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

Emergency Medicine SpecialistOrthopedic Specialist

Sibling codes

S44.0Injury of ulnar nerve at upper arm level S44.1Injury of median nerve at upper arm level S44.2Injury of radial nerve at upper arm level S44.3Injury of axillary nerve S44.4Injury of musculocutaneous nerve S44.5Injury of cutaneous sensory nerve at shoulder and upper arm level S44.8Injury of other nerves at shoulder and upper arm level

Mapped diagnoses and classifications

SNOMED_CT 429432009high

Injury of nerve of shoulder region

Source: SNOMED International ICD-10 map

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

S44.9

Replacement codes

S44.90 — Injury of unspecified nerve at shoulder and upper arm level, unspecified armS44.91 — Injury of unspecified nerve at shoulder and upper arm level, right armS44.92 — Injury of unspecified nerve at shoulder and upper arm level, left arm

Common synonyms

Injury of unspecified nerve at shoulder and upper arm levelInjury of nerve at shoulder and upper arm level

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.