Q93.3 Deletion of short arm of chromosome 4

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Deletion of short arm of chromosome 4 is Q93.3 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

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 Q93.3:

  • Wolff-Hirschorn syndrome
  • Syndrome › chromosome 4 short arm deletion
  • Deletion (s) › chromosome › short arm › 4

Inclusion Terms

  • Wolff-Hirschorn syndrome

U.S. Hospital Utilization

  • An estimated 680 U.S. inpatient stays in 2023 included Q93.3 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.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section III

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

References

Related Codes

Parent Code

Q93 Monosomies and deletions from the autosomes, not elsewhere classified

Related Codes in Q93

Q93 Monosomies and deletions from the autosomes, not elsewhere classified Q93.0 Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction) Q93.1 Whole chromosome monosomy, mosaicism (mitotic nondisjunction) Q93.2 Chromosome replaced with ring, dicentric or isochromosome Q93.4 Deletion of short arm of chromosome 5 Q93.5 Other deletions of part of a chromosome Q93.51 Angelman syndrome Q93.52 Phelan-McDermid syndrome Q93.59 Other deletions of part of a chromosome Q93.7 Deletions with other complex rearrangements Q93.8 Other deletions from the autosomes Q93.81 Velo-cardio-facial syndrome Q93.82 Williams syndrome Q93.88 Other microdeletions Q93.89 Other deletions from the autosomes Q93.9 Deletion from autosomes, unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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