ICD-10-CM

ICD-10 code for Baker's cyst: M71.20

The closest CDC title for "Baker's cyst" is M71.20, Synovial cyst of popliteal space [Baker], unspecified knee. M71.20 is a billable code.

Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page

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A header groups codes and is not billed. A billable code is one you can report.

Excludes1 means these codes are not reported together.

From M71.2. A note on a category applies to every code under it.

From M71. A note on a category applies to every code under it.

What is the ICD-10 code for Baker's cyst?

The closest CDC title for "Baker's cyst" is M71.20, Synovial cyst of popliteal space [Baker], unspecified knee. M71.20 is a billable code.

Is M71.20 billable?

Yes. M71.20 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 M71.20?

The CDC tabular list gives 4 Excludes1 notes (not coded together) for M71.20 and the categories above it. They are listed on this page.

What chapter is M71.20 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.