S56.404 — Unspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level
Is S56.404 billable?
No — S56.404 is a non-billable header code. S56.404 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 S56.404.
Billable codes under this header
- S56.404AUnspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level, initial encounter
- S56.404DUnspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level, subsequent encounter
- S56.404SUnspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level, sequela
S56.404 at a glance
| Code | S56.404 |
|---|---|
| Description | Unspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S56.404 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S56.40, the nearest indexed parent of S56.404. Use them to find the family, then select the specific code.
- Injury › muscle › finger › extensor
Use additional code — inherited from Chapter 19
Report an additional code alongside S56.404 to fully describe the condition. S56.404 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 S56.404, but a patient may have both at the same time. When documentation supports it, S56.404 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S50-S59
The conditions below are not part of S56.404, but a patient may have both at the same time. When documentation supports it, S56.404 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S56
The conditions below are not part of S56.404, but a patient may have both at the same time. When documentation supports it, S56.404 and the excluded code may both be reported.
Code also — inherited from S56
Two codes may be needed to describe the condition fully. Whether S56.404 is sequenced first depends on the reason for the encounter.
- any associated open wound (S51.-)
What codes fall under S56.404? (3)
- S56.404AUnspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level, initial encounter
- S56.404DUnspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level, subsequent encounter
- S56.404SUnspecified injury of extensor muscle, fascia and tendon of left middle finger at forearm level, sequela
How long has S56.404 existed?
S56.404 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 S56.40 family? (8)
- S56.401Unspecified injury of extensor muscle, fascia and tendon of right index finger at forearm levelnot billable
- S56.402Unspecified injury of extensor muscle, fascia and tendon of left index finger at forearm levelnot billable
- S56.403Unspecified injury of extensor muscle, fascia and tendon of right middle finger at forearm levelnot billable
- S56.405Unspecified injury of extensor muscle, fascia and tendon of right ring finger at forearm levelnot billable
- S56.406Unspecified injury of extensor muscle, fascia and tendon of left ring finger at forearm levelnot billable
- S56.407Unspecified injury of extensor muscle, fascia and tendon of right little finger at forearm levelnot billable
- S56.408Unspecified injury of extensor muscle, fascia and tendon of left little finger at forearm levelnot billable
- S56.409Unspecified injury of extensor muscle, fascia and tendon of unspecified finger at forearm levelnot billable