S66.199S Other injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela

Billable ICD-10-CM code, FY2026.

Built from S66.199 with 7th character S (sequela).

Applies from S66 Injury of muscle, fascia and tendon at wrist and hand level

Excludes2 (not included here)

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

Code also

• any associated open wound (S61.-)

7th character note

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

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from S66.1 Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level

Excludes2 (not included here)

• Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level (S66.0-)

Code annotations containing back-references to S66.199S

Back-references to S66

• Type 2 Excludes: S56 Injury of muscle, fascia and tendon at forearm level ("injury of muscle, fascia and tendon at or below wrist (S66.-)")
• Type 2 Excludes: S63 Dislocation and sprain of joints and ligaments at wrist and hand level ("strain of muscle, fascia and tendon of wrist and hand (S66.-)")

Diagnosis Index entries for S66.199S

• Injury › muscle (and fascia) (and tendon) › finger › flexor (forearm level) › hand level › specified type NEC

Nearby codes

• S66.198D Other injury of flexor muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounter
• S66.198S Other injury of flexor muscle, fascia and tendon of other finger at wrist and hand level, sequela
• S66.199 Other injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level
• S66.199A Other injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level, initial encounter
• S66.199D Other injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter
• S66.199S Other injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela (this code)
• S66.2 Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level
• S66.20 Unspecified injury of extensor muscle, fascia and tendon of thumb at wrist and hand level
• S66.201 Unspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level
• S66.201A Unspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, initial encounter
• S66.201D Unspecified injury of extensor muscle, fascia and tendon of right thumb at wrist and hand level, subsequent encounter