ICD-10-CM Code M21.6X9

Other acquired deformities of unspecified foot

Version 2020 Billable Code

Valid for Submission

M21.6X9 is a billable code used to specify a medical diagnosis of other acquired deformities of unspecified foot. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code M21.6X9 might also be used to specify conditions or terms like abduction deformity of the foot, absent bone in foot, acquired abduction deformity of foot, acquired adduction deformity of foot, acquired cavovarus deformity of foot, acquired cavus deformity of foot, etc

ICD-10:M21.6X9
Short Description:Other acquired deformities of unspecified foot
Long Description:Other acquired deformities of unspecified foot

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Abduction deformity of the foot
  • Absent bone in foot
  • Acquired abduction deformity of foot
  • Acquired adduction deformity of foot
  • Acquired cavovarus deformity of foot
  • Acquired cavus deformity of foot
  • Acquired dorsiflexed first ray
  • Acquired dorsiflexed forefoot
  • Acquired dorsiflexion deformity of foot
  • Acquired equinus deformity of foot
  • Acquired forefoot abductus
  • Acquired forefoot adductus
  • Acquired metatarsus adductus
  • Acquired plantar-flexed fifth ray
  • Acquired plantar-flexed first ray
  • Acquired plantar-flexed forefoot
  • Acquired pronated forefoot
  • Acquired pronation deformity of foot
  • Acquired serpentine deformity of foot
  • Acquired supinated forefoot
  • Acquired supination deformity of foot
  • Adductus deformity of foot
  • Angulation of bone in foot
  • Bowing deformity of lower limb
  • Bowing of foot bone
  • Calcaneovalgus deformity of foot
  • Cavovarus deformity of foot
  • Correction of low arch on tiptoe
  • Deformity of bone in foot
  • Deformity of metatarsal
  • Dorsiflexion deformity of foot
  • Finding of movement of foot
  • Fixed calcaneovalgus
  • Forefoot adductus
  • Loss of protective sensation of skin
  • Loss of protective sensation of skin of foot
  • Osteochondral defect of talus
  • Peripheral arterial occlusive disease
  • Peripheral vascular disease of foot with loss of protective sensation and deformity
  • Plantar flexion deformity of midtarsal joint
  • Plantarflexion deformity of foot
  • Postural calcaneovalgus
  • Pronated forefoot
  • Pronation deformity of the foot
  • Pronation of foot
  • Putter foot
  • Shortening of bone in foot
  • Supinated forefoot
  • Supination deformity of the foot
  • Talar tilt
  • Toeing-out

Diagnostic Related Groups

The ICD-10 code M21.6X9 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 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

Convert M21.6X9 to ICD-9

  • 736.79 - Acq ankle-foot def NEC (Approximate Flag)

Code Classification

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

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Foot Injuries and Disorders

Each of your feet has 26 bones, 33 joints, and more than 100 tendons, muscles, and ligaments. No wonder a lot of things can go wrong. Here are a few common problems:

  • Bunions - hard, painful bumps on the big toe joint
  • Corns and calluses - thickened skin from friction or pressure
  • Plantar warts - warts on the soles of your feet
  • Fallen arches - also called flat feet

Ill-fitting shoes often cause these problems. Aging and being overweight also increase your chances of having foot problems.


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