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  5. Injury of nerves at forearm level (S54)

Injury of nerves at forearm level (S54)

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.

  • Injury, poisoning and certain other consequences of external causes (S00–T88)

    • Injuries to the elbow and forearm (S50-S59)

        • Injury of nerves at forearm level (S54)

        • S54 Injury of nerves at forearm level
        • S54.0 Injury of ulnar nerve at forearm level
        • S54.00 Injury of ulnar nerve at forearm level, unspecified arm
        • 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 arm
        • 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 arm
        • 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 level
        • S54.10 Injury of median nerve at forearm level, unspecified arm
        • 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 arm
        • 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 arm
        • 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 level
        • S54.20 Injury of radial nerve at forearm level, unspecified arm
        • 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 arm
        • 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 arm
        • 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 level
        • S54.30 Injury of cutaneous sensory nerve at forearm level, unspecified arm
        • 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 arm
        • 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 arm
        • 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 level
        • S54.8X Injury of other nerves at forearm level
        • S54.8X1 Injury of other nerves at forearm level, right arm
        • 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 arm
        • 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 arm
        • 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 level
        • S54.90 Injury of unspecified nerve at forearm level, unspecified arm
        • 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 arm
        • 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 arm
        • 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

Instructional Notations

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.

  • any associated open wound S51

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.

  • injury of nerves at wrist and hand level S64

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.

  • The appropriate 7th character is to be added to each code from category S54

7th Character

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

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela