S56.31

Hierarchy

Where S56.31 sits in the official hierarchy. Each level is the code it is classified under.

1. S56 Injury of muscle, fascia and tendon at forearm level
2. S56.3 Parent Injury of extensor or abductor muscles, fascia and tendons of thumb at forearm level
3. S56.31 This code Strain of extensor or abductor muscles, fascia and tendons of thumb at forearm level

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

• S56.311 Strain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level Has subcodes
• S56.312 Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level Has subcodes
• S56.319 Strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level Has subcodes

Version History

How S56.31 appears in each release imported from the official files, newest first.

1. FY 2027 Effective October 1, 2026

   Current

   Strain of extensor or abductor muscles, fascia and tendons of thumb at forearm level

2. FY 2026 Effective October 1, 2025

   Unchanged

   Strain of extensor or abductor muscles, fascia and tendons of thumb at forearm level