S41.109A Unspecified open wound of unspecified upper arm, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S41.109 with 7th character A (initial encounter).

Applies from S41 Open wound of shoulder and upper arm

Excludes1 (never code together)

• traumatic amputation of shoulder and upper arm (S48.-)

Excludes2 (not included here)

• open fracture of shoulder and upper arm (S42.- with 7th character B or C)

Code also

• any associated wound infection

7th character note

• The appropriate 7th character is to be added to each code from category S41

7th character required

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

Code annotations containing back-references to S41.109A

Back-references to S41

• Code Also: S44 Injury of nerves at shoulder and upper arm level ("any associated open wound (S41.-)")
• Code Also: S45 Injury of blood vessels at shoulder and upper arm level ("any associated open wound (S41.-)")
• Code Also: S46 Injury of muscle, fascia and tendon at shoulder and upper arm level ("any associated open wound (S41.-)")

Nearby codes

• S41.102 Unspecified open wound of left upper arm
• S41.102A Unspecified open wound of left upper arm, initial encounter
• S41.102D Unspecified open wound of left upper arm, subsequent encounter
• S41.102S Unspecified open wound of left upper arm, sequela
• S41.109 Unspecified open wound of unspecified upper arm
• S41.109A Unspecified open wound of unspecified upper arm, initial encounter (this code)
• S41.109D Unspecified open wound of unspecified upper arm, subsequent encounter
• S41.109S Unspecified open wound of unspecified upper arm, sequela
• S41.11 Laceration without foreign body of upper arm
• S41.111 Laceration without foreign body of right upper arm
• S41.111A Laceration without foreign body of right upper arm, initial encounter