ICD-10-CM > S00-T88 > S60-S69 > S63 > S63.1 > S63.12 S63.12 Subluxation and dislocation of interphalangeal joint of thumb Non-Billable/Non-Specific Codes S63.121Subluxation of interphalangeal joint of right thumbS63.121A..., initial encounterS63.121D..., subsequent encounterS63.121S..., sequelaS63.122Subluxation of interphalangeal joint of left thumbS63.122A..., initial encounterS63.122D..., subsequent encounterS63.122S..., sequelaS63.123Subluxation of interphalangeal joint of unspecified thumbS63.123A..., initial encounterS63.123D..., subsequent encounterS63.123S..., sequelaS63.124Dislocation of interphalangeal joint of right thumbS63.124A..., initial encounterS63.124D..., subsequent encounterS63.124S..., sequelaS63.125Dislocation of interphalangeal joint of left thumbS63.125A..., initial encounterS63.125D..., subsequent encounterS63.125S..., sequelaS63.126Dislocation of interphalangeal joint of unspecified thumbS63.126A..., initial encounterS63.126D..., subsequent encounterS63.126S..., sequela