S66.3
Header — not billableInjury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level
The ICD-10 code for injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level is S66.3.
S66.3 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 4 more specific codes below.
Clinical notes
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
- Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level (S66.2-)
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under S66.3
- S66.30Unspecified injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnon-billable header
- S66.31Strain of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnon-billable header
- S66.32Laceration of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnon-billable header
- S66.39Other injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnon-billable header
Related codes in this category
- S66.0Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand levelnon-billable header
- S66.1Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnon-billable header
- S66.2Injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelnon-billable header
- S66.4Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand levelnon-billable header
- S66.5Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnon-billable header
- S66.8Injury of other specified muscles, fascia and tendons at wrist and hand levelnon-billable header
- S66.9Injury of unspecified muscle, fascia and tendon at wrist and hand levelnon-billable header
- S66.3Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelnon-billable header