S53.143A
Lateral subluxation of unspecified ulnohumeral joint, initial encounter
S53.143A (also written S53143A) is a billable ICD-10-CM diagnosis code for lateral subluxation of unspecified ulnohumeral joint, initial encounter. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 261 codes in category S53 (Dislocation and sprain of joints and ligaments of elbow). Its 7th character, A, means initial encounter. Its coding notes include a Use additional code instruction, a Code also instruction, 1 Excludes1 entry and 7 Excludes2 entries.
7th character
Category S53 requires a 7th character.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
The 7th character depends on whether the patient is in active treatment, not on who sees the patient. An aftercare Z code is not used for injury aftercare.
Each injury gets its own code unless a combination code exists, with the most serious injury first. Superficial injuries at the same site as a more severe injury are not coded. Injuries during medical care are coded as complications.
Use additional code
Add the listed code as a secondary code, if known.
Also from chapter/block level (1 note)
- code to identify any retained foreign body, if applicable (Z18.-)
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
- any associated open wound
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- strain of muscle, fascia and tendon at forearm level (S56.-)
Also from chapter/block level (6 notes)
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
Includes
Further defines or gives examples of the content of the category.
- avulsion of joint or ligament of elbow
- laceration of cartilage, joint or ligament of elbow
- sprain of cartilage, joint or ligament of elbow
- traumatic hemarthrosis of joint or ligament of elbow
- traumatic rupture of joint or ligament of elbow
- traumatic subluxation of joint or ligament of elbow
- traumatic tear of joint or ligament of elbow
Notes
Also from chapter/block level (2 notes)
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.