MCMedicalCodingSoftware
Q98.9

Q98.9: Sex chromosome abnormality, male phenotype, unspecified

Billable / specific codeICD-10-CMPOA exempt

Q98.9 is a billable, specific ICD-10-CM code for sex chromosome abnormality, male phenotype, unspecified. It is valid for submission on a claim.

Check Q98.9 with the rest of the claim: free scrubber

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Anomaly, anomalous›sex chromosomes NEC›male phenotype
  • Abnormal, abnormality, abnormalities›chromosome, chromosomal›sex›male phenotype
  • Anomaly, anomalous›chromosomes, chromosomal›sex›male phenotype
  • Syndrome›due to abnormality›chromosomal›sex›male phenotype

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Q98

ICD-10-CMFY2027· effective October 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.