S43.221D — Posterior subluxation of right sternoclavicular joint, subsequent encounter
Is S43.221D billable?
Yes — S43.221D is billable for FY2027. S43.221D is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. S43.221D may be submitted for encounters from October 1, 2026 through September 30, 2027.
S43.221D at a glance
| Code | S43.221D |
|---|---|
| Description | Posterior subluxation of right sternoclavicular joint, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in S43.221D?
In S43.221D, the 7th character D means subsequent encounter. The 7th character is required for S43.221D to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S43.221D group to?
S43.221D sits in MDC 23 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
How is S43.221D listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S43.22, the nearest indexed parent of S43.221D. Use them to find the family, then select the specific code.
- Dislocation › sternoclavicular › posterior (articular)
- Subluxation › sternoclavicular › posterior
Use additional code — inherited from Chapter 19
Report an additional code alongside S43.221D to fully describe the condition. S43.221D is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of S43.221D, but a patient may have both at the same time. When documentation supports it, S43.221D and the excluded code may both be reported.
Excludes2 — not included here — inherited from S40-S49
The conditions below are not part of S43.221D, but a patient may have both at the same time. When documentation supports it, S43.221D and the excluded code may both be reported.
Excludes2 — not included here — inherited from S43
The conditions below are not part of S43.221D, but a patient may have both at the same time. When documentation supports it, S43.221D and the excluded code may both be reported.
- strain of muscle, fascia and tendon of shoulder and upper arm (S46.-)
Code also — inherited from S43
Two codes may be needed to describe the condition fully. Whether S43.221D is sequenced first depends on the reason for the encounter.
- any associated open wound
How long has S43.221D existed?
S43.221D has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.