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ICD-10-CM 2027 diagnosis code

S56.209Unspecified injury of other flexor muscle, fascia and tendon at forearm level, unspecified arm

Not billable — use a more specific codeRequires 7th character

S56.209 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.Short description: Unsp injury of flexor musc/fasc/tend at forarm lv, unsp arm

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About S56.209

S56.209 is the ICD-10-CM diagnosis code for unspecified injury of other flexor muscle, fascia and tendon at forearm level, unspecified arm. It belongs to category S56 (injury of muscle, fascia and tendon at forearm level), block S50-S59 (injuries to the elbow and forearm) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within S56.20, choose S56.209 (unspecified arm) only when documentation doesn't support a more specific option: right arm (S56.201) and left arm (S56.202).

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.

7th character

The appropriate 7th character is to be added to each code from category S56

Notes that apply from higher levels

Instructions written at a parent level also apply to S56.209.

› From S56 Injury of muscle, fascia and tendon at forearm level
Excludes2
  • injury of muscle, fascia and tendon at or below wrist (S66.-)
  • sprain of joints and ligaments of elbow (S53.4-)
Code also
  • any associated open wound (S51.-)

Broader instructions also apply from S50-S59 Injuries to the elbow and forearm and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about S56.209

Is S56.209 billable?

No. S56.209 is a header code. Report one of its more specific subcodes instead.