Home
NPI Lookup
ICD-10 Lookup
CLIA Lookup
NDC Lookup
HCPCS Lookup
Taxonomy Codes
Q99.9 CHROMOSOMAL ABNORMALITY, UNSPECIFIED
Home
ICD-10 List
Q00-Q99
Q90-Q99
Q99
Q99.9
Code Information
Diagnosis Code:
Q99.9
Short Description:
Chromosomal abnormality, unspecified
Long Description:
Chromosomal abnormality, unspecified
Code Version:
2025 ICD-10-CM
The code Q99.9 is VALID for claim submission
Code Classification
Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Other chromosome abnormalities, not elsewhere classified (Q99)
Synonyms
Alpha-thalassemia intellectual disability syndrome linked to chromosome 16
Anomaly of chromosome pair 1
Anomaly of chromosome pair 10
Anomaly of chromosome pair 11
Anomaly of chromosome pair 12
Anomaly of chromosome pair 13
Anomaly of chromosome pair 14
Anomaly of chromosome pair 15
Anomaly of chromosome pair 16
Anomaly of chromosome pair 17
Anomaly of chromosome pair 18
Anomaly of chromosome pair 19
Anomaly of chromosome pair 2
Anomaly of chromosome pair 20
Anomaly of chromosome pair 21
Anomaly of chromosome pair 22
Anomaly of chromosome pair 3
Anomaly of chromosome pair 4
Anomaly of chromosome pair 5
Anomaly of chromosome pair 6
Anomaly of chromosome pair 7
Anomaly of chromosome pair 8
Anomaly of chromosome pair 9
Autoimmune lymphoproliferative syndrome
Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsufficiency
Autosomal chromosomal disorder
Autosomal dominant hereditary disorder
Autosomal hereditary disorder
Autosomal recessive hereditary disorder
Autosomal translocation
Cardiac arrhythmia associated with genetic disorder
CFTR-related disorder
Chromosomal disorder
Congenital chromosomal disease
Deletion of part of short arm of chromosome 16
Dementia due to chromosomal anomaly
Dementia due to genetic disease
Dominant autosomal hereditary disorder, complete penetrance
Dominant autosomal hereditary disorder, incomplete penetrance
Genetic disease
Immunodeficiency associated with chromosomal abnormality
Ulnar mammary syndrome
Crosswalk Information
ICD-10 Code
ICD-9 Code
ICD-9 Description
Q99.9
758.9
Chromosome anomaly NOS
This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.
Similar Codes
ICD-10 Code
ICD-10 Description
Q99
Other chromosome abnormalities, not elsewhere classified
Q99.0
Chimera 46, XX/46, XY
Q99.1
46, XX true hermaphrodite
Q99.2
Fragile X chromosome
Q99.8
Other specified chromosome abnormalities
Q99.81
Usher syndrome
Q99.811
Usher syndrome, type 1
Q99.812
Usher syndrome, type 2
Q99.813
Usher syndrome, type 3
Q99.818
Other Usher syndrome
Q99.819
Usher syndrome, unspecified
Q99.89
Other specified chromosome abnormalities
This page was last updated on: 10/1/2025
Previous Code
Next Code