S66.419
Billable codeStrain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level
The ICD-10 code for strain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level is S66.419.
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
- S66.411Strain of intrinsic muscle, fascia and tendon of right thumb at wrist and hand level
- S66.412Strain of intrinsic muscle, fascia and tendon of left thumb at wrist and hand level
- S66.419Strain of intrinsic muscle, fascia and tendon of unspecified thumb at wrist and hand level