S83
ICD-10Non-billable categoryDislocation and sprain of joints and ligaments of knee
Official ICD-10-CM descriptor (FY2026)
Dislocation and sprain of joints and ligaments of knee
S83 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- avulsion of joint or ligament of knee
- laceration of cartilage, joint or ligament of knee
- sprain of cartilage, joint or ligament of knee
- traumatic hemarthrosis of joint or ligament of knee
- traumatic rupture of joint or ligament of knee
- traumatic subluxation of joint or ligament of knee
- traumatic tear of joint or ligament of knee
Excludes2
Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.
- derangement of patella (M22.0-M22.3)
- injury of patellar ligament (tendon) (S76.1-)
- internal derangement of knee (M23.-)
- old dislocation of knee (M24.36)
- pathological dislocation of knee (M24.36)
- recurrent dislocation of knee (M22.0)
- strain of muscle, fascia and tendon of lower leg (S86.-)
Code also
Two codes may be needed; sequencing depends on the reason for the encounter.
- any associated open wound
7th character
- The appropriate 7th character is to be added to each code from category S83
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under S83
- S83.0Subluxation and dislocation of patellacategory
- S83.1Subluxation and dislocation of kneecategory
- S83.2Tear of meniscus, current injurycategory
- S83.3Tear of articular cartilage of knee, currentcategory
- S83.4Sprain of collateral ligament of kneecategory
- S83.5Sprain of cruciate ligament of kneecategory
- S83.6Sprain of the superior tibiofibular joint and ligamentcategory
- S83.8Sprain of other specified parts of kneecategory
- S83.9Sprain of unspecified site of kneecategory
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.