ICD-10 Diagnosis Code M21.861

Other specified acquired deformities of right lower leg

Diagnosis Code M21.861

ICD-10: M21.861
Short Description: Other specified acquired deformities of right lower leg
Long Description: Other specified acquired deformities of right lower leg
This is the 2018 version of the ICD-10-CM diagnosis code M21.861

Valid for Submission
The code M21.861 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Other joint disorders (M20-M25)
      • Other acquired deformities of limbs (M21)

Information for Medical Professionals

Diagnostic Related Groups
The diagnosis code M21.861 is grouped in the following Diagnostic Related Group(s) (MS-DRG V34.0)

  • 564 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH MCC
  • 565 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH CC
  • 566 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITHOUT CC/MCC

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The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

Information for Patients


Leg Injuries and Disorders

Your legs are made up of bones, blood vessels, muscles, and other connective tissue. They are important for motion and standing. Playing sports, running, falling, or having an accident can damage your legs. Common leg injuries include sprains and strains, joint dislocations, and fractures.

These injuries can affect the entire leg, or just the foot, ankle, knee, or hip. Certain diseases also lead to leg problems. For example, knee osteoarthritis, common in older people, can cause pain and limited motion. Problems in your veins in your legs can lead to varicose veins or deep vein thrombosis.

  • Blount disease (Medical Encyclopedia)
  • Bowlegs (Medical Encyclopedia)
  • Common peroneal nerve dysfunction (Medical Encyclopedia)
  • Femoral nerve dysfunction (Medical Encyclopedia)
  • Femur fracture repair - discharge (Medical Encyclopedia)
  • Foot, leg, and ankle swelling (Medical Encyclopedia)
  • Iliotibial band syndrome -- aftercare (Medical Encyclopedia)
  • Ischemic ulcers -- self-care (Medical Encyclopedia)
  • Knock knees (Medical Encyclopedia)
  • Leg pain (Medical Encyclopedia)
  • Shin splints - self-care (Medical Encyclopedia)
  • Tibial nerve dysfunction (Medical Encyclopedia)
  • Venous insufficiency (Medical Encyclopedia)


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