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ICD-10-CM 2027

ICD-10 code for forearm injury

S59.91

Unspecified injury of forearm

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Injury › forearm”. Page updated September 29, 2026.

About coding forearm injury

The ICD-10-CM code for forearm injury is S59.91 (Unspecified injury of forearm). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on S59.91.

Within S59.9 (unspecified injury of elbow and forearm), S59.91 is specifically for unspecified injury of forearm. Related codes cover elbow (S59.90).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

More specific forearm injury codes (official index)

  • blood vessel
  • contusion
  • fracture
  • muscle
  • nerve
  • open
  • specified NEC S59.81 — Other specified injuries of forearm
  • superficial

Common questions about forearm injury ICD-10 codes

What is the ICD-10 code for forearm injury?

S59.91 — Unspecified injury of forearm (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: S59.81.

Is S59.91 billable?

No. S59.91 is a header code. Report one of its more specific subcodes instead.