Q93 – Monosomies and deletions from the autosomes, not elsewhere classified
ICD-10-CM 2027 diagnosis code · Chromosomal abnormalities, not elsewhere classified
ICD-10-CM code
Q93
- Code
Q93(claims format:Q93)- Description
- Monosomies and deletions from the autosomes, not elsewhere classified
- Short description
- Monosomies and deletions from the autosomes, NEC
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- Block
- Q90-Q99 Chromosomal abnormalities, not elsewhere classified
Billable codes under Q93
Q93 is a header code and cannot be used on claims. Choose the most specific code:
- Q93.0 – Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction)Billable
- Q93.1 – Whole chromosome monosomy, mosaicism (mitotic nondisjunction)Billable
- Q93.2 – Chromosome replaced with ring, dicentric or isochromosomeBillable
- Q93.3 – Deletion of short arm of chromosome 4Billable
- Q93.4 – Deletion of short arm of chromosome 5Billable
- Q93.5 – Other deletions of part of a chromosomeHeader (more codes below)
- Q93.7 – Deletions with other complex rearrangementsBillable
- Q93.8 – Other deletions from the autosomesHeader (more codes below)
- Q93.9 – Deletion from autosomes, unspecifiedBillable
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block Q90-Q99
Excludes2 (not included here):
- mitochondrial metabolic disorders (E88.4-)
Frequently asked questions
What is ICD-10 code Q93?
Q93 is the ICD-10-CM code for monosomies and deletions from the autosomes, not elsewhere classified, in the block Q90-Q99 (Chromosomal abnormalities, not elsewhere classified).
Is Q93 a billable code?
No. Q93 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.