Is Q68.4 a billable ICD-10-CM code?

Yes. Q68.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Q68.4 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).

What cannot be coded together with Q68.4?

Q68.4 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Q68.4 (Q68) and apply to it just the same.

Q68.4

Q68.4 — Congenital bowing of tibia and fibula

Billable / specific codeICD-10-CMPOA exempt

Q68.4 is a billable, specific ICD-10-CM code for congenital bowing of tibia and fibula. It is valid for submission on a claim.

Excludes1 inherited from the categories above Q68.4

These are not written on Q68.4, but they bind it: a note on a category applies to every code beneath it. Billing Q68.4 with anything listed here is a denial.

Written on Q68 — Other congenital musculoskeletal deformities

reduction defects of limb(s) (Q71-Q73)

Excludes2 inherited from the categories above Q68.4

Also inherited, and the opposite of Excludes1: these conditions are not part of Q68.4, but a patient can have both, so you may code both.

Written on Q68 — Other congenital musculoskeletal deformities

congenital myotonic chondrodystrophy (G71.13)

Risk adjustment

Q68.4 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.

How Q68.4 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to Q68.4.

Bowing›fibula›congenital
Bowing›tibia›congenital

Code history

Q68.4 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share Q68. If Q68.4 is not quite right, the correct code is usually one of these.

Questions about Q68.4

Is Q68.4 a billable ICD-10-CM code?: Yes. Q68.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Q68.4 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).
What cannot be coded together with Q68.4?: Q68.4 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above Q68.4 (Q68) and apply to it just the same.