Is Q97.8 a billable ICD-10-CM code?

Yes. Q97.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Q97.8 sit in the tabular list?

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Chromosomal abnormalities, not elsewhere classified (Q90-Q99).

What cannot be coded together with Q97.8?

Q97.8 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 Q97.8 (Q97) and apply to it just the same.

Q97.8

Q97.8 — Other specified sex chromosome abnormalities, female phenotype

Billable / specific codeICD-10-CMPOA exempt

Q97.8 is a billable, specific ICD-10-CM code for other specified sex chromosome abnormalities, female phenotype. It is valid for submission on a claim.

Excludes1 inherited from the categories above Q97.8

These are not written on Q97.8, but they bind it: a note on a category applies to every code beneath it. Billing Q97.8 with anything listed here is a denial.

Written on Q97 — Other sex chromosome abnormalities, female phenotype, not elsewhere classified

Turner's syndrome (Q96.-)

Risk adjustment

Q97.8 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 Q97.8 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 Q97.8.

Sex›chromosome mosaics
Absence›sex chromosome›female phenotype
Anomaly, anomalous›sex chromosomes NEC›female phenotype
Mosaicism, mosaic›sex chromosome›female
Accessory›chromosome›sex›female phenotype
Anomaly, anomalous›chromosomes, chromosomal›sex›female phenotype
Abnormal, abnormality, abnormalities›chromosome, chromosomal›sex›female phenotype›specified NEC

Code history

Q97.8 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 Q97. If Q97.8 is not quite right, the correct code is usually one of these.

Questions about Q97.8

Is Q97.8 a billable ICD-10-CM code?: Yes. Q97.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Q97.8 sit in the tabular list?: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Chromosomal abnormalities, not elsewhere classified (Q90-Q99).
What cannot be coded together with Q97.8?: Q97.8 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 Q97.8 (Q97) and apply to it just the same.