Is Q66.21 a billable ICD-10-CM code?

No. Q66.21 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Q66.21 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).

Q66.21

Q66.21 — Congenital metatarsus primus varus

Non-billable headerICD-10-CM

Q66.21 is a non-billable header ICD-10-CM code for congenital metatarsus primus varus. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

Q66.21 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.

Code to one of these instead Q66.21

3 child codes. Green means billable.

Related codes at this level

Codes that share Q66.2. If Q66.21 is not quite right, the correct code is usually one of these.

Q66.22Congenital metatarsus adductus

Questions about Q66.21

Is Q66.21 a billable ICD-10-CM code?: No. Q66.21 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Q66.21 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).