Q92.6
Marker chromosomes
Q92.6 is a non-billable ICD-10-CM code header for marker chromosomes. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are Q92.61 Marker chromosomes in normal individual and Q92.62 Marker chromosomes in abnormal individual. Its coding notes include 1 Excludes1 entry and 2 Excludes2 entries.
Guidelines tip
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Chapter 17 codes can be used for life. Manifestations that are an inherent part of a specifically coded anomaly are not coded separately. A corrected malformation is reported with a personal history code.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
- trisomies of chromosomes 13, 18, 21 (Q90-Q91)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (2 notes)
- mitochondrial metabolic disorders (E88.4-)
- inborn errors of metabolism (E70-E88)
Includes
Further defines or gives examples of the content of the category.
- unbalanced translocations and insertions
Inclusion terms
Conditions classified to this code.
- Trisomies due to dicentrics
- Trisomies due to extra rings
- Trisomies due to isochromosomes
- Individual with marker heterochromatin
Notes
Also from chapter/block level (1 note)
- Codes from this chapter are not for use on maternal records