S46.129A Laceration of muscle, fascia and tendon of long head of biceps, unspecified arm, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S46.129 with 7th character A (initial encounter).

Applies from S46 Injury of muscle, fascia and tendon at shoulder and upper arm level

Excludes2 (not included here)

• injury of muscle, fascia and tendon at elbow (S56.-)
• sprain of joints and ligaments of shoulder girdle (S43.9)

Code also

• any associated open wound (S41.-)

7th character note

• The appropriate 7th character is to be added to each code from category S46

7th character required

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

Medicare Code Edits (MCE v43.1 (April 2026))

• Unspecified code (laterality): Unspecified codes for which a more specific code identifying laterality (right, left, bilateral) exists within the same code family.

Code annotations containing back-references to S46.129A

Back-references to S46

• Type 2 Excludes: S43 Dislocation and sprain of joints and ligaments of shoulder girdle ("strain of muscle, fascia and tendon of shoulder and upper arm (S46.-)")

Nearby codes

• S46.122 Laceration of muscle, fascia and tendon of long head of biceps, left arm
• S46.122A Laceration of muscle, fascia and tendon of long head of biceps, left arm, initial encounter
• S46.122D Laceration of muscle, fascia and tendon of long head of biceps, left arm, subsequent encounter
• S46.122S Laceration of muscle, fascia and tendon of long head of biceps, left arm, sequela
• S46.129 Laceration of muscle, fascia and tendon of long head of biceps, unspecified arm
• S46.129A Laceration of muscle, fascia and tendon of long head of biceps, unspecified arm, initial encounter (this code)
• S46.129D Laceration of muscle, fascia and tendon of long head of biceps, unspecified arm, subsequent encounter
• S46.129S Laceration of muscle, fascia and tendon of long head of biceps, unspecified arm, sequela
• S46.19 Other injury of muscle, fascia and tendon of long head of biceps
• S46.191 Other injury of muscle, fascia and tendon of long head of biceps, right arm
• S46.191A Other injury of muscle, fascia and tendon of long head of biceps, right arm, initial encounter