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    OpenPayerBilling CodesInjuries to the knee and lower legICD-10-CM s83-dislocation-and-sprain-of-knee
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    ICD-10-CM Code For Dislocation And Sprain Of Joints And Ligaments Of Knee: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group S83 includes dislocations and sprains of the knee joint and its supporting ligaments, covering injuries such as medial and lateral collateral ligament sprains, anterior and posterior cruciate ligament sprains, and knee joint dislocations. These ICD-10-CM diagnosis codes are used to document acute traumatic knee injuries that affect joint stability, ligament integrity, and functional status, including associated complications such as tears and strains. Accurate coding within the ICD-10-CM S83 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM S83: Dislocation And Sprain Of Joints And Ligaments Of Knee Overview

    The ICD-10-CM S83 code group describes acute traumatic injuries to the knee, including dislocations and sprains of joints and ligaments that compromise knee stability and function. These diagnoses target the musculoskeletal structures of the knee joint and surrounding soft tissues. Accurate coding matters for correct claim processing and to reflect clinical complexity for care coordination and reimbursement.

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    When to Use

    Use a code from this group when documenting an acute traumatic knee injury involving a dislocation or sprain of one or more knee ligaments or the knee joint itself. Codes from this group are selected when the clinical record specifies the injured structure, laterality, and whether the encounter is initial, subsequent, or for sequela.

    ICD-10-CM Codes

    351 rows

    ICD-10-CM CodeDescription
    S83.001AUnspecified subluxation of right patella, initial encounter
    S83.001DUnspecified subluxation of right patella, subsequent encounter
    S83.001SUnspecified subluxation of right patella, sequela
    S83.002AUnspecified subluxation of left patella, initial encounter
    S83.002DUnspecified subluxation of left patella, subsequent encounter
    S83.002SUnspecified subluxation of left patella, sequela
    S83.003AUnspecified subluxation of unspecified patella, initial encounter
    S83.003DUnspecified subluxation of unspecified patella, subsequent encounter
    S83.003SUnspecified subluxation of unspecified patella, sequela
    S83.004AUnspecified dislocation of right patella, initial encounter
    S83.004DUnspecified dislocation of right patella, subsequent encounter
    S83.004SUnspecified dislocation of right patella, sequela
    S83.005AUnspecified dislocation of left patella, initial encounter
    S83.005DUnspecified dislocation of left patella, subsequent encounter
    S83.005SUnspecified dislocation of left patella, sequela
    S83.006AUnspecified dislocation of unspecified patella, initial encounter
    S83.006DUnspecified dislocation of unspecified patella, subsequent encounter
    S83.006SUnspecified dislocation of unspecified patella, sequela
    S83.011ALateral subluxation of right patella, initial encounter
    S83.011DLateral subluxation of right patella, subsequent encounter

    Showing 1–20 of 351

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    DRG Codes

    7 rows

    DRG CodeDescription
    562Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCC
    563Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCC
    949Aftercare with CC/MCC
    950Aftercare without CC/MCC
    963Other Multiple Significant Trauma with MCC
    964Other Multiple Significant Trauma with CC
    965Other Multiple Significant Trauma without CC/MCC

    Typical Clinical Scenarios

    • A young athlete presents to the emergency department after twisting their knee during a soccer match with immediate pain, swelling, and inability to bear weight. Physical exam reveals joint instability and pain localized to the knee ligaments; urgent imaging/clinical diagnosis indicates an acute tear or rupture of a cruciate or collateral ligament requiring prompt immobilization and orthopedic referral, so an acute sprain/dislocation code from this group is assigned. Typical codes: S83.511A, S83.512A, S83.513A
    • An older adult with a history of knee instability following a remote injury reports chronic giving-way sensations and intermittent swelling that limit activities; they are evaluated in outpatient orthopedics for persistent mechanical symptoms and planned elective reconstructive surgery. Because this is a later encounter for ongoing ligamentous injury or sprain-related sequelae, a subsequent or sequela code from the group is chosen to reflect the continuing nature of the knee ligament disorder. Typical codes: S83.511D, S83.512D, S83.513D
    • A patient seen in the hospital for a knee dislocation complicated by neurovascular compromise after a motor vehicle collision requires reduction and vascular assessment; documentation notes complication of the dislocation with associated ligament disruption and care directed at both reduction and management of the complication. A code from the group that corresponds to the dislocation/sprain with the appropriate encounter or sequela designator is assigned to capture the acute traumatic knee ligament injury and its complication. Typical codes: S83.001A, S83.011A, S83.101A

    Related Codes

    S80-SUPERFICIAL-INJURY-KNEE-LOWER-LEG

    ICD-10-CM Code For Superficial Injury Of Knee And Lower Leg: Group Overview

    S81-OPEN-WOUND-KNEE-LOWER-LEG

    ICD-10-CM Code For Open Wound Of Knee And Lower Leg: Group Overview

    S82-FRACTURE-OF-LOWER-LEG

    ICD-10-CM Code For Fracture Of Lower Leg, Including Ankle: Group Overview

    S84-INJURY-OF-LOWER-LEG-NERVES

    ICD-10-CM Code For Injury Of Nerves At Lower Leg Level: Group Overview

    S85-INJURY-OF-BLOOD-VESSELS-LOWER-LEG

    ICD-10-CM Code For Injury Of Blood Vessels At Lower Leg Level: Group Overview

    S87-CRUSHING-INJURY-LOWER-LEG

    ICD-10-CM Code For Crushing Injury Of Lower Leg: Group Overview

    S88-TRAUMATIC-AMPUTATION-OF-LOWER-LEG

    ICD-10-CM Code For Traumatic Amputation Of Lower Leg: Group Overview

    S89-OTHER-AND-UNSPECIFIED-INJURIES-OF-LOWER-LEG

    ICD-10-CM Code For Other And Unspecified Injuries Of Lower Leg: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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