S56.31 — Strain of extensor or abductor muscles, fascia and tendons of thumb at forearm level
Is S56.31 billable?
No — S56.31 is a non-billable header code. S56.31 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath S56.31.
Billable codes under this header
- S56.311AStrain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, initial encounter
- S56.311DStrain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, subsequent encounter
- S56.311SStrain of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, sequela
- S56.312AStrain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, initial encounter
- S56.312DStrain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, subsequent encounter
- S56.312SStrain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, sequela
- S56.319AStrain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, initial encounter
- S56.319DStrain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, subsequent encounter
- S56.319SStrain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, sequela
S56.31 at a glance
| Code | S56.31 |
|---|---|
| Description | Strain of extensor or abductor muscles, fascia and tendons of thumb at forearm level |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S56.31 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to S56.31. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Injury › muscle › thumb › abductor › strain
- Injury › muscle › thumb › extensor › strain
Use additional code — inherited from Chapter 19
Report an additional code alongside S56.31 to fully describe the condition. S56.31 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S56.31, but a patient may have both at the same time. When documentation supports it, S56.31 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S50-S59
The conditions below are not part of S56.31, but a patient may have both at the same time. When documentation supports it, S56.31 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S56
The conditions below are not part of S56.31, but a patient may have both at the same time. When documentation supports it, S56.31 and the excluded code may both be reported.
Code also — inherited from S56
Two codes may be needed to describe the condition fully. Whether S56.31 is sequenced first depends on the reason for the encounter.
- any associated open wound (S51.-)
What codes fall under S56.31? (3)
- S56.311Strain of extensor or abductor muscles, fascia and tendons of right thumb at forearm levelnot billable
- S56.312Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm levelnot billable
- S56.319Strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm levelnot billable
How long has S56.31 existed?
S56.31 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the S56.3 family? (3)
- S56.30Unspecified injury of extensor or abductor muscles, fascia and tendons of thumb at forearm levelnot billable
- S56.32Laceration of extensor or abductor muscles, fascia and tendons of thumb at forearm levelnot billable
- S56.39Other injury of extensor or abductor muscles, fascia and tendons of thumb at forearm levelnot billable