S46.312A Strain of muscle, fascia and tendon of triceps, left arm, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S46.312 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

Code annotations containing back-references to S46.312A

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

• S46.311 Strain of muscle, fascia and tendon of triceps, right arm
• S46.311A Strain of muscle, fascia and tendon of triceps, right arm, initial encounter
• S46.311D Strain of muscle, fascia and tendon of triceps, right arm, subsequent encounter
• S46.311S Strain of muscle, fascia and tendon of triceps, right arm, sequela
• S46.312 Strain of muscle, fascia and tendon of triceps, left arm
• S46.312A Strain of muscle, fascia and tendon of triceps, left arm, initial encounter (this code)
• S46.312D Strain of muscle, fascia and tendon of triceps, left arm, subsequent encounter
• S46.312S Strain of muscle, fascia and tendon of triceps, left arm, sequela
• S46.319 Strain of muscle, fascia and tendon of triceps, unspecified arm
• S46.319A Strain of muscle, fascia and tendon of triceps, unspecified arm, initial encounter
• S46.319D Strain of muscle, fascia and tendon of triceps, unspecified arm, subsequent encounter