ICD-10-CM
ICD-10 code for Bunion: M21.619
The closest CDC title for "Bunion" is M21.619, Bunion of unspecified foot. M21.619 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under M21, then other CDC titles that name bunion of unspecified foot
A header groups codes and is not billed. A billable code is one you can report.
- M21Other acquired deformities of limbsHeader
- M21.0Valgus deformity, not elsewhere classifiedHeader
- M21.00Valgus deformity, not elsewhere classified, unspecified siteBillable
- M21.02Valgus deformity, not elsewhere classified, elbowHeader
- M21.021Valgus deformity, not elsewhere classified, right elbowBillable
- M21.022Valgus deformity, not elsewhere classified, left elbowBillable
- M21.029Valgus deformity, not elsewhere classified, unspecified elbowBillable
- M21.05Valgus deformity, not elsewhere classified, hipHeader
- M21.051Valgus deformity, not elsewhere classified, right hipBillable
- M21.052Valgus deformity, not elsewhere classified, left hipBillable
- M21.059Valgus deformity, not elsewhere classified, unspecified hipBillable
- M21.06Valgus deformity, not elsewhere classified, kneeHeader
- M21.061Valgus deformity, not elsewhere classified, right kneeBillable
- M21.062Valgus deformity, not elsewhere classified, left kneeBillable
- M21.069Valgus deformity, not elsewhere classified, unspecified kneeBillable
- M21.07Valgus deformity, not elsewhere classified, ankleHeader
- M21.071Valgus deformity, not elsewhere classified, right ankleBillable
- M21.072Valgus deformity, not elsewhere classified, left ankleBillable
- M21.079Valgus deformity, not elsewhere classified, unspecified ankleBillable
- M21.1Varus deformity, not elsewhere classifiedHeader
- M21.10Varus deformity, not elsewhere classified, unspecified siteBillable
- M21.12Varus deformity, not elsewhere classified, elbowHeader
- M21.121Varus deformity, not elsewhere classified, right elbowBillable
- M21.122Varus deformity, not elsewhere classified, left elbowBillable
- M21.129Varus deformity, not elsewhere classified, unspecified elbowBillable
- M21.15Varus deformity, not elsewhere classified, hipHeader
- M21.151Varus deformity, not elsewhere classified, right hipBillable
- M21.152Varus deformity, not elsewhere classified, left hipBillable
- M21.159Varus deformity, not elsewhere classified, unspecified hipBillable
- M21.16Varus deformity, not elsewhere classified, kneeHeader
- M21.161Varus deformity, not elsewhere classified, right kneeBillable
- M21.162Varus deformity, not elsewhere classified, left kneeBillable
- M21.169Varus deformity, not elsewhere classified, unspecified kneeBillable
- M21.17Varus deformity, not elsewhere classified, ankleHeader
- M21.171Varus deformity, not elsewhere classified, right ankleBillable
- M21.172Varus deformity, not elsewhere classified, left ankleBillable
- M21.179Varus deformity, not elsewhere classified, unspecified ankleBillable
- M21.2Flexion deformityHeader
- M21.20Flexion deformity, unspecified siteBillable
- M21.21Flexion deformity, shoulderHeader
- M21.211Flexion deformity, right shoulderBillable
- M21.212Flexion deformity, left shoulderBillable
- M21.219Flexion deformity, unspecified shoulderBillable
- M21.22Flexion deformity, elbowHeader
- M21.221Flexion deformity, right elbowBillable
- M21.222Flexion deformity, left elbowBillable
- M21.229Flexion deformity, unspecified elbowBillable
- M21.23Flexion deformity, wristHeader
- M21.231Flexion deformity, right wristBillable
- M21.232Flexion deformity, left wristBillable
- M21.239Flexion deformity, unspecified wristBillable
- M21.24Flexion deformity, finger jointsHeader
- M21.241Flexion deformity, right finger jointsBillable
- M21.242Flexion deformity, left finger jointsBillable
- M21.249Flexion deformity, unspecified finger jointsBillable
- M21.25Flexion deformity, hipHeader
- M21.251Flexion deformity, right hipBillable
- M21.252Flexion deformity, left hipBillable
- M21.259Flexion deformity, unspecified hipBillable
- M21.26Flexion deformity, kneeHeader
- M21.261Flexion deformity, right kneeBillable
- M21.262Flexion deformity, left kneeBillable
- M21.269Flexion deformity, unspecified kneeBillable
- M21.27Flexion deformity, ankle and toesHeader
- M21.271Flexion deformity, right ankle and toesBillable
- M21.272Flexion deformity, left ankle and toesBillable
- M21.279Flexion deformity, unspecified ankle and toesBillable
- M21.3Wrist or foot drop (acquired)Header
- M21.33Wrist drop (acquired)Header
- M21.331Wrist drop, right wristBillable
- M21.332Wrist drop, left wristBillable
- M21.339Wrist drop, unspecified wristBillable
- M21.37Foot drop (acquired)Header
- M21.371Foot drop, right footBillable
- M21.372Foot drop, left footBillable
- M21.379Foot drop, unspecified footBillable
- M21.4Flat foot [pes planus] (acquired)Header
- M21.40Flat foot [pes planus] (acquired), unspecified footBillable
- M21.41Flat foot [pes planus] (acquired), right footBillable
- M21.42Flat foot [pes planus] (acquired), left footBillable
- M21.5Acquired clawhand, clubhand, clawfoot and clubfootHeader
- M21.51Acquired clawhandHeader
- M21.511Acquired clawhand, right handBillable
- M21.512Acquired clawhand, left handBillable
- M21.519Acquired clawhand, unspecified handBillable
- M21.52Acquired clubhandHeader
- M21.521Acquired clubhand, right handBillable
- M21.522Acquired clubhand, left handBillable
- M21.529Acquired clubhand, unspecified handBillable
- M21.53Acquired clawfootHeader
- M21.531Acquired clawfoot, right footBillable
- M21.532Acquired clawfoot, left footBillable
- M21.539Acquired clawfoot, unspecified footBillable
- M21.54Acquired clubfootHeader
- M21.541Acquired clubfoot, right footBillable
- M21.542Acquired clubfoot, left footBillable
- M21.549Acquired clubfoot, unspecified footBillable
- M21.6Other acquired deformities of footHeader
- M21.61BunionHeader
- M21.611Bunion of right footBillable
- M21.612Bunion of left footBillable
- M21.619Bunion of unspecified footBillable
- M21.62BunionetteHeader
- M21.621Bunionette of right footBillable
- M21.622Bunionette of left footBillable
- M21.629Bunionette of unspecified footBillable
- M21.6XOther acquired deformities of footHeader
- M21.6X1Other acquired deformities of right footBillable
- M21.6X2Other acquired deformities of left footBillable
- M21.6X9Other acquired deformities of unspecified footBillable
- M21.7Unequal limb length (acquired)Header
- M21.70Unequal limb length (acquired), unspecified siteBillable
- M21.72Unequal limb length (acquired), humerusHeader
- M21.721Unequal limb length (acquired), right humerusBillable
- M21.722Unequal limb length (acquired), left humerusBillable
- M21.729Unequal limb length (acquired), unspecified humerusBillable
- M21.73Unequal limb length (acquired), ulna and radiusHeader
- M21.731Unequal limb length (acquired), right ulnaBillable
- M21.732Unequal limb length (acquired), left ulnaBillable
- M21.733Unequal limb length (acquired), right radiusBillable
- M21.734Unequal limb length (acquired), left radiusBillable
- M21.739Unequal limb length (acquired), unspecified ulna and radiusBillable
- M21.75Unequal limb length (acquired), femurHeader
- M21.751Unequal limb length (acquired), right femurBillable
- M21.752Unequal limb length (acquired), left femurBillable
- M21.759Unequal limb length (acquired), unspecified femurBillable
- M21.76Unequal limb length (acquired), tibia and fibulaHeader
- M21.761Unequal limb length (acquired), right tibiaBillable
- M21.762Unequal limb length (acquired), left tibiaBillable
- M21.763Unequal limb length (acquired), right fibulaBillable
- M21.764Unequal limb length (acquired), left fibulaBillable
- M21.769Unequal limb length (acquired), unspecified tibia and fibulaBillable
- M21.8Other specified acquired deformities of limbsHeader
- M21.80Other specified acquired deformities of unspecified limbBillable
- M21.82Other specified acquired deformities of upper armHeader
- M21.821Other specified acquired deformities of right upper armBillable
- M21.822Other specified acquired deformities of left upper armBillable
- M21.829Other specified acquired deformities of unspecified upper armBillable
- M21.83Other specified acquired deformities of forearmHeader
- M21.831Other specified acquired deformities of right forearmBillable
- M21.832Other specified acquired deformities of left forearmBillable
- M21.839Other specified acquired deformities of unspecified forearmBillable
- M21.85Other specified acquired deformities of thighHeader
- M21.851Other specified acquired deformities of right thighBillable
- M21.852Other specified acquired deformities of left thighBillable
- M21.859Other specified acquired deformities of unspecified thighBillable
- M21.86Other specified acquired deformities of lower legHeader
- M21.861Other specified acquired deformities of right lower legBillable
- M21.862Other specified acquired deformities of left lower legBillable
- M21.869Other specified acquired deformities of unspecified lower legBillable
- M21.9Unspecified acquired deformity of limb and handHeader
- M21.90Unspecified acquired deformity of unspecified limbBillable
- M21.92Unspecified acquired deformity of upper armHeader
- M21.921Unspecified acquired deformity of right upper armBillable
- M21.922Unspecified acquired deformity of left upper armBillable
- M21.929Unspecified acquired deformity of unspecified upper armBillable
- M21.93Unspecified acquired deformity of forearmHeader
- M21.931Unspecified acquired deformity of right forearmBillable
- M21.932Unspecified acquired deformity of left forearmBillable
- M21.939Unspecified acquired deformity of unspecified forearmBillable
- M21.94Unspecified acquired deformity of handHeader
- M21.941Unspecified acquired deformity of hand, right handBillable
- M21.942Unspecified acquired deformity of hand, left handBillable
- M21.949Unspecified acquired deformity of hand, unspecified handBillable
- M21.95Unspecified acquired deformity of thighHeader
- M21.951Unspecified acquired deformity of right thighBillable
- M21.952Unspecified acquired deformity of left thighBillable
- M21.959Unspecified acquired deformity of unspecified thighBillable
- M21.96Unspecified acquired deformity of lower legHeader
- M21.961Unspecified acquired deformity of right lower legBillable
- M21.962Unspecified acquired deformity of left lower legBillable
- M21.969Unspecified acquired deformity of unspecified lower legBillable
Excludes1
Excludes1 means these codes are not reported together.
From M21. A note on a category applies to every code under it.
Excludes2
Related conditions
Related pages
- M21.619 code detailsNotes, nearby codes, CMS-HCC group
- Category M21Every code under it
- Chapter 13Diseases of the musculoskeletal system
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Bunion?
The closest CDC title for "Bunion" is M21.619, Bunion of unspecified foot. M21.619 is a billable code.
Is M21.619 billable?
Yes. M21.619 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to M21.619?
The CDC tabular list gives 3 Excludes1 notes (not coded together), 3 Excludes2 notes (may be coded together when both are documented) for M21.619 and the categories above it. They are listed on this page.
What chapter is M21.619 in?
Chapter 13. Diseases of the musculoskeletal system.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.