S66.5

S66.5: Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level

Non-billable headerICD-10-CMunspecified

S66.5 is a non-billable header ICD-10-CM code for injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category S66

A: initial encounter
D: subsequent encounter
S: sequela

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level (S66.4-)

Excludes2 inherited from the categories above S66.5

Not part of this code, but both may be coded when both are present.

Written on S66: Injury of muscle, fascia and tendon at wrist and hand level

sprain of joints and ligaments of wrist and hand (S63.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead S66.5

4 child codes. Green means billable.