ICD-10-CM > S00-T88 > S50-S59 > S53 > S53.1 > S53.12 S53.12 Posterior subluxation and dislocation of ulnohumeral joint Non-Billable/Non-Specific Codes S53.121Posterior subluxation of right ulnohumeral jointS53.121A..., initial encounterS53.121D..., subsequent encounterS53.121S..., sequelaS53.122Posterior subluxation of left ulnohumeral jointS53.122A..., initial encounterS53.122D..., subsequent encounterS53.122S..., sequelaS53.123Posterior subluxation of unspecified ulnohumeral jointS53.123A..., initial encounterS53.123D..., subsequent encounterS53.123S..., sequelaS53.124Posterior dislocation of right ulnohumeral jointS53.124A..., initial encounterS53.124D..., subsequent encounterS53.124S..., sequelaS53.125Posterior dislocation of left ulnohumeral jointS53.125A..., initial encounterS53.125D..., subsequent encounterS53.125S..., sequelaS53.126Posterior dislocation of unspecified ulnohumeral jointS53.126A..., initial encounterS53.126D..., subsequent encounterS53.126S..., sequela