S66.50 — Unspecified injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level
Not billable
Is S66.50 billable?
No — S66.50 is a non-billable header code. S66.50 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 30 billable codes beneath S66.50.
Billable codes under this header
- S66.500AUnspecified injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter
- S66.500DUnspecified injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter
- S66.500SUnspecified injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level, sequela
- S66.501AUnspecified injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter
- S66.501DUnspecified injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter
- S66.501SUnspecified injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, sequela
- S66.502AUnspecified injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter
- S66.502DUnspecified injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter
- S66.502SUnspecified injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level, sequela
- S66.503AUnspecified injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter
- S66.503DUnspecified injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter
- S66.503SUnspecified injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level, sequela
- S66.504AUnspecified injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter
- S66.504DUnspecified injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter
- S66.504SUnspecified injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level, sequela
- S66.505AUnspecified injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter
- S66.505DUnspecified injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter
- S66.505SUnspecified injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level, sequela
- S66.506AUnspecified injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter
- S66.506DUnspecified injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter
- S66.506SUnspecified injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level, sequela
- S66.507AUnspecified injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter
- S66.507DUnspecified injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, subsequent encounter
- S66.507SUnspecified injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level, sequela
- S66.508AUnspecified injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
- S66.508DUnspecified injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounter
- S66.508SUnspecified injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level, sequela
- S66.509AUnspecified injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level, initial encounter
- S66.509DUnspecified injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter
- S66.509SUnspecified injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela
S66.50 at a glance
| Code | S66.50 |
|---|---|
| Description | Unspecified injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is S66.50 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to S66.50. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Injury › muscle › finger › index › intrinsic
- Injury › muscle › finger › little › intrinsic
- Injury › muscle › finger › middle › intrinsic
- Injury › muscle › finger › ring › intrinsic
Use additional code — inherited from Chapter 19
Report an additional code alongside S66.50 to fully describe the condition. S66.50 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 S66.50, but a patient may have both at the same time. When documentation supports it, S66.50 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S60-S69
The conditions below are not part of S66.50, but a patient may have both at the same time. When documentation supports it, S66.50 and the excluded code may both be reported.
Excludes2 — not included here — inherited from S66
The conditions below are not part of S66.50, but a patient may have both at the same time. When documentation supports it, S66.50 and the excluded code may both be reported.
- sprain of joints and ligaments of wrist and hand (S63.-)
Excludes2 — not included here — inherited from S66.5
The conditions below are not part of S66.50, but a patient may have both at the same time. When documentation supports it, S66.50 and the excluded code may both be reported.
- injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level (S66.4-)
Code also — inherited from S66
Two codes may be needed to describe the condition fully. Whether S66.50 is sequenced first depends on the reason for the encounter.
- any associated open wound (S61.-)
What codes fall under S66.50? (10)
- S66.500Unspecified injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand levelnot billable
- S66.501Unspecified injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand levelnot billable
- S66.502Unspecified injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand levelnot billable
- S66.503Unspecified injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand levelnot billable
- S66.504Unspecified injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand levelnot billable
- S66.505Unspecified injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand levelnot billable
- S66.506Unspecified injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand levelnot billable
- S66.507Unspecified injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand levelnot billable
- S66.508Unspecified injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand levelnot billable
- S66.509Unspecified injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand levelnot billable
How long has S66.50 existed?
S66.50 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 S66.5 family? (3)
- S66.51Strain of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.52Laceration of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable
- S66.59Other injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnot billable