Q99.8

Other specified chromosome abnormalities

Non-billable header

Q99.8 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes (from Q99)

  • Note: Codes from this chapter are not for use on maternal records

Excludes2

Not included here — may be reported together when both conditions exist.

  • inborn errors of metabolism (E70-E88) (from Q99)
  • mitochondrial metabolic disorders (E88.4-) (from Q99)

Also known as

  • Abnormal, abnormality, abnormalities, chromosome, chromosomal, sex
  • Abnormal, abnormality, abnormalities, chromosome, chromosomal, specified NEC
  • Additional, chromosome
  • Anomaly, anomalous, chromosomes, chromosomal, specified NEC
  • Syndrome, due to abnormality, chromosomal, specified NEC
  • Translocation, chromosomes NEC

Parent code

  • Q99Other chromosome abnormalities, not elsewhere classifiedHeader

More specific codes Q99.8

  • Q99.81Usher syndromeHeader
  • Q99.89Other specified chromosome abnormalitiesBillable

Related codes

  • Q99.0Chimera 46, XX/46, XYBillable
  • Q99.146, XX true hermaphroditeBillable
  • Q99.2Fragile X chromosomeBillable
  • Q99.9Chromosomal abnormality, unspecifiedBillable

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