S56.312 — Strain of extensor or abductor muscles, fascia and tendons of left thumb at forearm level
Is S56.312 billable?
No — S56.312 is a non-billable header code. S56.312 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 3 billable codes beneath S56.312.
Billable codes under this header
- 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
S56.312 at a glance
| Code | S56.312 |
|---|---|
| Description | Strain of extensor or abductor muscles, fascia and tendons of left 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 S56.312 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S56.31, the nearest indexed parent of S56.312. Use them to find the family, then select the specific code.
- Injury › muscle › thumb › abductor › strain
- Injury › muscle › thumb › extensor › strain
Use additional code — inherited from Chapter 19
Report an additional code alongside S56.312 to fully describe the condition. S56.312 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 S56.312, but a patient may have both at the same time. When documentation supports it, S56.312 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S50-S59
The conditions below are not part of S56.312, but a patient may have both at the same time. When documentation supports it, S56.312 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S56
The conditions below are not part of S56.312, but a patient may have both at the same time. When documentation supports it, S56.312 and the excluded code may both be reported.
Code also — inherited from S56
Two codes may be needed to describe the condition fully. Whether S56.312 is sequenced first depends on the reason for the encounter.
- any associated open wound (S51.-)
What codes fall under S56.312? (3)
- 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
How long has S56.312 existed?
S56.312 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.