S63.121A Subluxation of interphalangeal joint of right thumb, initial encounter

Billable ICD-10-CM code, FY2026.

Built from S63.121 with 7th character A (initial encounter).

Applies from S63 Dislocation and sprain of joints and ligaments at wrist and hand level

Includes

• avulsion of joint or ligament at wrist and hand level
• laceration of cartilage, joint or ligament at wrist and hand level
• sprain of cartilage, joint or ligament at wrist and hand level
• traumatic hemarthrosis of joint or ligament at wrist and hand level
• traumatic rupture of joint or ligament at wrist and hand level
• traumatic subluxation of joint or ligament at wrist and hand level
• traumatic tear of joint or ligament at wrist and hand level

Excludes2 (not included here)

• strain of muscle, fascia and tendon of wrist and hand (S66.-)

Code also

• any associated open wound

7th character note

• The appropriate 7th character is to be added to each code from category S63

7th character required

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

Code annotations containing back-references to S63.121A

Back-references to S63.1

• Type 2 Excludes: S63.04 Subluxation and dislocation of carpometacarpal joint of thumb ("interphalangeal subluxation and dislocation of thumb (S63.1-)")
• Type 2 Excludes: S63.2 Subluxation and dislocation of other finger(s) ("subluxation and dislocation of thumb (S63.1-)")

Back-references to S63

• Type 2 Excludes: S66 Injury of muscle, fascia and tendon at wrist and hand level ("sprain of joints and ligaments of wrist and hand (S63.-)")

Nearby codes

• S63.116A Dislocation of metacarpophalangeal joint of unspecified thumb, initial encounter
• S63.116D Dislocation of metacarpophalangeal joint of unspecified thumb, subsequent encounter
• S63.116S Dislocation of metacarpophalangeal joint of unspecified thumb, sequela
• S63.12 Subluxation and dislocation of interphalangeal joint of thumb
• S63.121 Subluxation of interphalangeal joint of right thumb
• S63.121A Subluxation of interphalangeal joint of right thumb, initial encounter (this code)
• S63.121D Subluxation of interphalangeal joint of right thumb, subsequent encounter
• S63.121S Subluxation of interphalangeal joint of right thumb, sequela
• S63.122 Subluxation of interphalangeal joint of left thumb
• S63.122A Subluxation of interphalangeal joint of left thumb, initial encounter
• S63.122D Subluxation of interphalangeal joint of left thumb, subsequent encounter