Q93.89 Other deletions from the autosomes

The ICD-10-CM code for Other deletions from the autosomes is Q93.89 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

17: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

Section

Q90-Q99: Chromosomal abnormalities, not elsewhere classified (Q90-Q99)

Category Q93

17 codes (14 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Q93.89:

• Deletion (s) › long arm chromosome 18 or 21
• Monosomy › specified NEC
• Syndrome › long arm 18 or 21 deletion
• Deletion (s) › chromosome › specified NEC
• Deletion (s) › autosome › identified by in situ hybridization (ISH)
• Deletion (s) › chromosome › seen only at prometaphase
• Deletion (s) › autosome › identified by fluorescence in situ hybridization (FISH)

Inclusion Terms

• Deletions identified by fluorescence in situ hybridization (FISH)
• Deletions identified by in situ hybridization (ISH)
• Deletions seen only at prometaphase

U.S. Hospital Utilization

• An estimated 2,875 U.S. inpatient stays in 2023 included Q93.89 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

POA indicator for congenital conditions/anomalies and Q00-Q99 exception

Congenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)