S66.399
Billable codeOther injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level
The ICD-10 code for other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level is S66.399.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •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.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- S66.390Other injury of extensor muscle, fascia and tendon of right index finger at wrist and hand level
- S66.391Other injury of extensor muscle, fascia and tendon of left index finger at wrist and hand level
- S66.392Other injury of extensor muscle, fascia and tendon of right middle finger at wrist and hand level
- S66.393Other injury of extensor muscle, fascia and tendon of left middle finger at wrist and hand level
- S66.394Other injury of extensor muscle, fascia and tendon of right ring finger at wrist and hand level
- S66.395Other injury of extensor muscle, fascia and tendon of left ring finger at wrist and hand level
- S66.396Other injury of extensor muscle, fascia and tendon of right little finger at wrist and hand level
- S66.397Other injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level
- S66.398Other injury of extensor muscle, fascia and tendon of other finger at wrist and hand level
- S66.399Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level