S66.229

Hierarchy

Where S66.229 sits in the official hierarchy. Each level is the code it is classified under.

1. S66 Injury of muscle, fascia and tendon at wrist and hand level
2. S66.2 Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level
3. S66.22 Parent Laceration of extensor muscle, fascia and tendon of thumb at wrist and hand level
4. S66.229 This code Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

• S66.229A Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, initial encounter Billable
• S66.229D Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, subsequent encounter Billable
• S66.229S Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level, sequela Billable

Version History

How S66.229 appears in each release imported from the official files, newest first.

1. FY 2027 Effective October 1, 2026

   Current

   Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level

2. FY 2026 Effective October 1, 2025

   Unchanged

   Laceration of extensor muscle, fascia and tendon of unspecified thumb at wrist and hand level