2026 ICD-10-CM Diagnosis Code Q93.59Other deletions of part of a chromosome

ICD-10-CM Codes›Q00-Q99›Q90-Q99›Q93

ICD-10-CM Q93.59
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q93.59 is a billable ICD-10-CM diagnosis code for other deletions of part of a chromosome. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Chromosomal abnormalities.

Code Identity

ICD-10-CM Code
Q93.59
Billable Status
Yes — Valid for Submission
Code Describes
Other deletions of part of a chromosome
Short Description
Other deletions of part of a chromosome
Same as the full description in the CMS dataset.
Parent Code
Q93.5
Other deletions of part of a chromosome

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ90-Q99Chromosomal abnormalities, not elsewhere classified
CategoryQ93Monosomies and deletions from the autosomes, not elsewhere classified
This CodeQ93.59Other deletions of part of a chromosome

Present on Admission (POA)Billing

Q93.59 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • 10p partial monosomy syndrome
  • 10q partial monosomy
  • 11p partial monosomy syndrome
  • 11p15 deletion syndrome
  • 11q partial monosomy syndrome
  • 12q15 deletion syndrome
  • 12q24.31-q24.32 deletion syndrome
  • 18q partial monosomy syndrome
  • 1p partial monosomy
  • 1q partial monosomy
  • 20p12.2 deletion syndrome
  • 21q partial monosomy syndrome
  • 22q partial monosomy
  • 22q13.3 deletion syndrome
  • 3p partial monosomy syndrome
  • 4q partial monosomy syndrome
  • 6q terminal deletion syndrome
  • 7p partial monosomy
  • 7p12-p14 deletion syndrome
  • 7p21.1 deletion syndrome
  • 7q partial monosomy
  • 8p partial monosomy syndrome
  • 8q partial monosomy syndrome
  • 9p24.3 deletion syndrome
  • 9q partial monosomy syndrome
  • 9q34 deletion syndrome
  • Chromosome 16p11.2 deletion syndrome
  • Chromosome 2q37 deletion syndrome
  • Congenital exostosis
  • Deletion 5q35
  • Deletion of long arm of chromosome 13
  • Deletion of long arm of chromosome 18
  • Deletion of long arm of chromosome 19
  • Deletion of part of autosome
  • Deletion of part of chromosome 1
  • Deletion of part of chromosome 10
  • Deletion of part of chromosome 11
  • Deletion of part of chromosome 12
  • Deletion of part of chromosome 13
  • Deletion of part of chromosome 14
  • Deletion of part of chromosome 15
  • Deletion of part of chromosome 16
  • Deletion of part of chromosome 17
  • Deletion of part of chromosome 18
  • Deletion of part of chromosome 19
  • Deletion of part of chromosome 2
  • Deletion of part of chromosome 20
  • Deletion of part of chromosome 21
  • Deletion of part of chromosome 22
  • Deletion of part of chromosome 3
  • Deletion of part of chromosome 4
  • Deletion of part of chromosome 5
  • Deletion of part of chromosome 6
  • Deletion of part of chromosome 7
  • Deletion of part of chromosome 8
  • Deletion of part of chromosome 9
  • Deletion of part of long arm of chromosome 12
  • Deletion of part of long arm of chromosome 17
  • Deletion of part of long arm of chromosome 2
  • Deletion of part of long arm of chromosome 20
  • Deletion of part of long arm of chromosome 3
  • Deletion of part of long arm of chromosome 5
  • Deletion of part of long arm of chromosome 6
  • Deletion of part of short arm of chromosome 12
  • Deletion of part of short arm of chromosome 16
  • Deletion of part of short arm of chromosome 17
  • Deletion of part of short arm of chromosome 2
  • Deletion of part of short arm of chromosome 20
  • Deletion of part of short arm of chromosome 6
  • Deletion of short arm of chromosome 19
  • Distal chromosome 18q deletion syndrome
  • Distal deletion of chromosome 13
  • Distal deletion of chromosome 14
  • Distal deletion of chromosome 15
  • Distal deletion of chromosome 21
  • Distal deletion of long arm of chromosome 12
  • Distal deletion of long arm of chromosome 16
  • Distal deletion of long arm of chromosome 2
  • Distal deletion of long arm of chromosome 3
  • Distal deletion of long arm of chromosome 6
  • Distal deletion of long arm of chromosome 7
  • Distal deletion of long arm of chromosome 8
  • Distal deletion of long arm of chromosome 9
  • Distal deletion of short arm of chromosome 1
  • Distal deletion of short arm of chromosome 3
  • Distal deletion of short arm of chromosome 8
  • Distal monosomy 10p
  • Distal monosomy 10q syndrome
  • Distal monosomy 12p
  • Distal monosomy 13q syndrome
  • Distal monosomy 14q syndrome
  • Distal monosomy 15q
  • Distal monosomy 17q
  • Distal monosomy 19p13.3
  • Distal monosomy 3p syndrome
  • Distal monosomy 4q
  • Distal monosomy 6p
  • Distal monosomy 7p syndrome
  • Distal monosomy 7q36 syndrome
  • Distal monosomy 9p syndrome
  • Immunodeficiency associated with 18p syndrome
  • Medial deletion of chromosome 13
  • Medial deletion of chromosome 14
  • Medial deletion of long arm of chromosome 1
  • Medial deletion of long arm of chromosome 2
  • Medial deletion of long arm of chromosome 4
  • Medial deletion of long arm of chromosome 5
  • Medial deletion of long arm of chromosome 7
  • Medial deletion of long arm of chromosome 9
  • Medial deletion of short arm of chromosome 1
  • Monosomy 13q14 syndrome
  • Monosomy 13q34 syndrome
  • Monosomy 9p
  • Monosomy 9q22.3 syndrome
  • Non-distal monosomy 10q
  • Non-distal monosomy 12q
  • Partial deletion of long arm of chromosome 14
  • Partial deletion of long arm of chromosome 15
  • Partial deletion of long arm of chromosome 16
  • Potocki-Shaffer syndrome
  • Proximal 18q deletion syndrome
  • Proximal deletion of chromosome 13
  • Proximal deletion of chromosome 14
  • Proximal deletion of chromosome 15
  • Proximal deletion of chromosome 21
  • Proximal deletion of long arm of chromosome 1
  • Proximal deletion of long arm of chromosome 10
  • Proximal deletion of long arm of chromosome 11
  • Proximal deletion of long arm of chromosome 12
  • Proximal deletion of long arm of chromosome 16
  • Proximal deletion of long arm of chromosome 17
  • Proximal deletion of long arm of chromosome 2
  • Proximal deletion of long arm of chromosome 3
  • Proximal deletion of long arm of chromosome 4
  • Proximal deletion of long arm of chromosome 5
  • Proximal deletion of long arm of chromosome 6
  • Proximal deletion of long arm of chromosome 7
  • Proximal deletion of long arm of chromosome 8
  • Proximal deletion of long arm of chromosome 9
  • Proximal deletion of short arm of chromosome 1
  • Proximal deletion of short arm of chromosome 3
  • Proximal deletion of short arm of chromosome 6
  • Proximal deletion of short arm of chromosome 7
  • Proximal deletion of short arm of chromosome 8
  • Proximal deletion of short arm of chromosome 9

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Deletion(s)
      • chromosome
        • part of NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL009
Chromosomal abnormalities
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Chromosome 16p11.2 Deletion Syndrome

    a microdeletion at 16p11.2, characterized by a predisposition to obesity, developmental delay and autism spectrum disorders.

Patient EducationClinical

Genetic Disorders

Genetic disorders are health conditions caused by changes (also called mutations or variants) in your genes. Genes are parts of DNA found in your cells that carry instructions for how your body grows, develops, and functions. Many genes tell your body how to make proteins, which are needed for your body to work properly.

The full article covers:

  • What are genetic disorders?
  • What causes genetic disorders?
  • What are the types of genetic disorders?
  • What are the different ways a genetic disorder can be inherited?
  • How are genetic disorders diagnosed?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code History & ChangesHistory

Replacement Q93.59 replaces the following previously assigned code(s):

  • Q93.5 - Other deletions of part of a chromosome
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q93.59Overview

Is Q93.59 (Other deletions of part of a chromosome) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other deletions of part of a chromosome on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is Q93.59 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other deletions of part of a chromosome on inpatient claims.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.