Is Q79.0 a billable ICD-10-CM code?

Yes. Q79.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Q79.0 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 Q79.0?

Q79.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Q79.0

Q79.0 — Congenital diaphragmatic hernia

Billable / specific codeICD-10-CMPOA exempt

Q79.0 is a billable, specific ICD-10-CM code for congenital diaphragmatic hernia. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

congenital hiatus hernia (Q40.1)

Other codes that can never be billed with Q79.0

These codes carry an Excludes1 note pointing at Q79.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Q79.0 alone.

Q40.1Congenital hiatus hernia
J98.6Disorders of diaphragm
K44Diaphragmatic hernia

Risk adjustment

Q79.0 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.

Medicare coverage

Q79.0 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax

How Q79.0 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 Q79.0.

Hernia, hernial›diaphragm, diaphragmatic›congenital
Defect, defective›diaphragm›congenital›gross(with hernia)
Defect, defective›diaphragm›congenital›with hernia

Related codes at this level

Codes that share Q79. If Q79.0 is not quite right, the correct code is usually one of these.

Questions about Q79.0

Is Q79.0 a billable ICD-10-CM code?: Yes. Q79.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Q79.0 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 Q79.0?: Q79.0 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.