MCMCB Pro
Q66.50

Q66.50Congenital pes planus, unspecified foot

Billable / specific codeICD-10-CMPOA exemptunspecified

Q66.50 is a billable, specific ICD-10-CM code for congenital pes planus, unspecified foot. It is valid for submission on a claim.

Risk adjustment

Q66.50 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Related codes at this level

Codes that share Q66.5. If Q66.50 is not quite right, the correct code is usually one of these.

Questions about Q66.50

Is Q66.50 a billable ICD-10-CM code?
Yes. Q66.50 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Q66.50 sit in the tabular list?
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Congenital malformations and deformations of the musculoskeletal system (Q65-Q79).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.