S83.8X9A — Sprain of other specified parts of unspecified knee, initial encounter
Is S83.8X9A billable?
Yes, but S83.8X9A is an unspecified code. S83.8X9A is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, S83.8X9A is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting S83.8X9A — the more specific alternatives are listed below.
More specific alternatives
- S83.001AUnspecified subluxation of right patella, initial encounter
- S83.101AUnspecified subluxation of right knee, initial encounter
- S83.200ABucket-handle tear of unspecified meniscus, current injury, right knee, initial encounter
- S83.30XATear of articular cartilage of unspecified knee, current, initial encounter
- S83.401ASprain of unspecified collateral ligament of right knee, initial encounter
- S83.501ASprain of unspecified cruciate ligament of right knee, initial encounter
- S83.60XASprain of the superior tibiofibular joint and ligament, unspecified knee, initial encounter
S83.8X9A at a glance
| Code | S83.8X9A |
|---|---|
| Description | Sprain of other specified parts of unspecified knee, initial encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "A" | initial encounter |
What does the 7th character "A" mean in S83.8X9A?
In S83.8X9A, the 7th character A means initial encounter. The 7th character is required for S83.8X9A to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does S83.8X9A group to?
S83.8X9A sits in MDC 08 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.
- 562Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCCmedical
- 563Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCCmedical
How is S83.8X9A listed in the Alphabetic Index?
The Alphabetic Index lists these routes under S83.8X, the nearest indexed parent of S83.8X9A. Use them to find the family, then select the specific code.
- Sprain › knee › specified site NEC (joint) (ligament)
Use additional code — inherited from Chapter 19
Report an additional code alongside S83.8X9A to fully describe the condition. S83.8X9A 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 S83.8X9A, but a patient may have both at the same time. When documentation supports it, S83.8X9A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S80-S89
The conditions below are not part of S83.8X9A, but a patient may have both at the same time. When documentation supports it, S83.8X9A and the excluded code may both be reported.
Excludes2 — not included here — inherited from S83
The conditions below are not part of S83.8X9A, but a patient may have both at the same time. When documentation supports it, S83.8X9A and the excluded code may both be reported.
Code also — inherited from S83
Two codes may be needed to describe the condition fully. Whether S83.8X9A is sequenced first depends on the reason for the encounter.
- any associated open wound
How long has S83.8X9A existed?
S83.8X9A 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.