ICD-10-CM Tabular Index · Chapter 19 · FY 2026 S54

Injury of nerves at forearm level (S54) ICD-10-CM

The S54 code range covers injury of nerves at forearm level with 80 ICD-10-CM diagnosis codes. 54 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2026 datasetEffective Oct 1, 2025 – Sep 30, 2026
80
Diagnosis Codes
54
Billable Codes
S54
Code Range
S50–S59
Parent Section

Code Also

A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

ICD-10-CM

Codes in the S54 Range 80 codes · 54 billable

80 of 80 shown
  • S54 Injury of nerves at forearm levelNon-billable
  • S54.0 Injury of ulnar nerve at forearm levelNon-billable
  • S54.00 Injury of ulnar nerve at forearm level, unspecified armNon-billable
  • S54.00XA Injury of ulnar nerve at forearm level, unspecified arm, initial encounter
  • S54.00XD Injury of ulnar nerve at forearm level, unspecified arm, subsequent encounter
  • S54.00XS Injury of ulnar nerve at forearm level, unspecified arm, sequela
  • S54.01 Injury of ulnar nerve at forearm level, right armNon-billable
  • S54.01XA Injury of ulnar nerve at forearm level, right arm, initial encounter
  • S54.01XD Injury of ulnar nerve at forearm level, right arm, subsequent encounter
  • S54.01XS Injury of ulnar nerve at forearm level, right arm, sequela
  • S54.02 Injury of ulnar nerve at forearm level, left armNon-billable
  • S54.02XA Injury of ulnar nerve at forearm level, left arm, initial encounter
  • S54.02XD Injury of ulnar nerve at forearm level, left arm, subsequent encounter
  • S54.02XS Injury of ulnar nerve at forearm level, left arm, sequela
  • S54.1 Injury of median nerve at forearm levelNon-billable
  • S54.10 Injury of median nerve at forearm level, unspecified armNon-billable
  • S54.10XA Injury of median nerve at forearm level, unspecified arm, initial encounter
  • S54.10XD Injury of median nerve at forearm level, unspecified arm, subsequent encounter
  • S54.10XS Injury of median nerve at forearm level, unspecified arm, sequela
  • S54.11 Injury of median nerve at forearm level, right armNon-billable
  • S54.11XA Injury of median nerve at forearm level, right arm, initial encounter
  • S54.11XD Injury of median nerve at forearm level, right arm, subsequent encounter
  • S54.11XS Injury of median nerve at forearm level, right arm, sequela
  • S54.12 Injury of median nerve at forearm level, left armNon-billable
  • S54.12XA Injury of median nerve at forearm level, left arm, initial encounter
  • S54.12XD Injury of median nerve at forearm level, left arm, subsequent encounter
  • S54.12XS Injury of median nerve at forearm level, left arm, sequela
  • S54.2 Injury of radial nerve at forearm levelNon-billable
  • S54.20 Injury of radial nerve at forearm level, unspecified armNon-billable
  • S54.20XA Injury of radial nerve at forearm level, unspecified arm, initial encounter
  • S54.20XD Injury of radial nerve at forearm level, unspecified arm, subsequent encounter
  • S54.20XS Injury of radial nerve at forearm level, unspecified arm, sequela
  • S54.21 Injury of radial nerve at forearm level, right armNon-billable
  • S54.21XA Injury of radial nerve at forearm level, right arm, initial encounter
  • S54.21XD Injury of radial nerve at forearm level, right arm, subsequent encounter
  • S54.21XS Injury of radial nerve at forearm level, right arm, sequela
  • S54.22 Injury of radial nerve at forearm level, left armNon-billable
  • S54.22XA Injury of radial nerve at forearm level, left arm, initial encounter
  • S54.22XD Injury of radial nerve at forearm level, left arm, subsequent encounter
  • S54.22XS Injury of radial nerve at forearm level, left arm, sequela
  • S54.3 Injury of cutaneous sensory nerve at forearm levelNon-billable
  • S54.30 Injury of cutaneous sensory nerve at forearm level, unspecified armNon-billable
  • S54.30XA Injury of cutaneous sensory nerve at forearm level, unspecified arm, initial encounter
  • S54.30XD Injury of cutaneous sensory nerve at forearm level, unspecified arm, subsequent encounter
  • S54.30XS Injury of cutaneous sensory nerve at forearm level, unspecified arm, sequela
  • S54.31 Injury of cutaneous sensory nerve at forearm level, right armNon-billable
  • S54.31XA Injury of cutaneous sensory nerve at forearm level, right arm, initial encounter
  • S54.31XD Injury of cutaneous sensory nerve at forearm level, right arm, subsequent encounter
  • S54.31XS Injury of cutaneous sensory nerve at forearm level, right arm, sequela
  • S54.32 Injury of cutaneous sensory nerve at forearm level, left armNon-billable
  • S54.32XA Injury of cutaneous sensory nerve at forearm level, left arm, initial encounter
  • S54.32XD Injury of cutaneous sensory nerve at forearm level, left arm, subsequent encounter
  • S54.32XS Injury of cutaneous sensory nerve at forearm level, left arm, sequela
  • S54.8 Injury of other nerves at forearm levelNon-billable
  • S54.8X Injury of other nerves at forearm levelNon-billable
  • S54.8X1 Injury of other nerves at forearm level, right armNon-billable
  • S54.8X1A Injury of other nerves at forearm level, right arm, initial encounter
  • S54.8X1D Injury of other nerves at forearm level, right arm, subsequent encounter
  • S54.8X1S Injury of other nerves at forearm level, right arm, sequela
  • S54.8X2 Injury of other nerves at forearm level, left armNon-billable
  • S54.8X2A Injury of other nerves at forearm level, left arm, initial encounter
  • S54.8X2D Injury of other nerves at forearm level, left arm, subsequent encounter
  • S54.8X2S Injury of other nerves at forearm level, left arm, sequela
  • S54.8X9 Injury of other nerves at forearm level, unspecified armNon-billable
  • S54.8X9A Injury of other nerves at forearm level, unspecified arm, initial encounter
  • S54.8X9D Injury of other nerves at forearm level, unspecified arm, subsequent encounter
  • S54.8X9S Injury of other nerves at forearm level, unspecified arm, sequela
  • S54.9 Injury of unspecified nerve at forearm levelNon-billable
  • S54.90 Injury of unspecified nerve at forearm level, unspecified armNon-billable
  • S54.90XA Injury of unspecified nerve at forearm level, unspecified arm, initial encounter
  • S54.90XD Injury of unspecified nerve at forearm level, unspecified arm, subsequent encounter
  • S54.90XS Injury of unspecified nerve at forearm level, unspecified arm, sequela
  • S54.91 Injury of unspecified nerve at forearm level, right armNon-billable
  • S54.91XA Injury of unspecified nerve at forearm level, right arm, initial encounter
  • S54.91XD Injury of unspecified nerve at forearm level, right arm, subsequent encounter
  • S54.91XS Injury of unspecified nerve at forearm level, right arm, sequela
  • S54.92 Injury of unspecified nerve at forearm level, left armNon-billable
  • S54.92XA Injury of unspecified nerve at forearm level, left arm, initial encounter
  • S54.92XD Injury of unspecified nerve at forearm level, left arm, subsequent encounter
  • S54.92XS Injury of unspecified nerve at forearm level, left arm, sequela

About the S54 Code Range

The ICD-10 code section S54 covers injuries to nerves at the forearm level, including specific nerves such as the ulnar, median, radial, cutaneous sensory nerves, and other less common nerve injuries. These codes are used to precisely document nerve damage in the forearm for medical records and billing.

This category includes detailed subcodes indicating the specific nerve injured—like the ulnar nerve (S54.0), median nerve (S54.1), or radial nerve (S54.2)—and further distinctions by the affected arm (right, left, or unspecified). For example, the ICD-10 code for injury of ulnar nerve at forearm level can be specified as S54.00XA for an initial encounter involving an unspecified arm. Synonyms such as "closed injury, ulnar nerve" or "anterior interosseous nerve lesion" are linked to their corresponding codes, assisting coders in accurate code selection based on common terminology. The section includes codes for initial care, follow-up visits, and sequela, reflecting injury stage.

Overall, these codes enable healthcare professionals to capture the nature, nerve type, laterality, and encounter specifics of forearm nerve injuries, supporting accurate clinical documentation and care management.

Questions About This Page

How many billable codes are in the S54 range?

Of the 80 codes in this range, 54 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

What does the S54 range classify?

The range classifies injury of nerves at forearm level. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.

Related References

All ICD-10-CM ChaptersAll of Chapter 19ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.