ICD-10-CM Code Q93.2

Chromosome replaced with ring, dicentric or isochromosome

Version 2020 Billable Code POA Exempt

Valid for Submission

Q93.2 is a billable code used to specify a medical diagnosis of chromosome replaced with ring, dicentric or isochromosome. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code Q93.2 might also be used to specify conditions or terms like café-au-lait spots and ring chromosome 11, chromosome replaced with ring or dicentric, isodicentric chromosome 15 syndrome, ring chromosome 1 syndrome, ring chromosome 10 syndrome, ring chromosome 11 syndrome, etc The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

Short Description:Chromosome replaced with ring, dicentric or isochromosome
Long Description:Chromosome replaced with ring, dicentric or isochromosome

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code Q93.2 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Café-au-lait spots and ring chromosome 11
  • Chromosome replaced with ring or dicentric
  • Isodicentric chromosome 15 syndrome
  • Ring chromosome 1 syndrome
  • Ring chromosome 10 syndrome
  • Ring chromosome 11 syndrome
  • Ring chromosome 11 syndrome
  • Ring chromosome 12 syndrome
  • Ring chromosome 13 syndrome
  • Ring chromosome 14 syndrome
  • Ring chromosome 15 syndrome
  • Ring chromosome 16 syndrome
  • Ring chromosome 17 syndrome
  • Ring chromosome 18 syndrome
  • Ring chromosome 19 syndrome
  • Ring chromosome 2 syndrome
  • Ring chromosome 20 syndrome
  • Ring chromosome 21 syndrome
  • Ring chromosome 22 syndrome
  • Ring chromosome 3 syndrome
  • Ring chromosome 4 syndrome
  • Ring chromosome 5 syndrome
  • Ring chromosome 6 syndrome
  • Ring chromosome 7 syndrome
  • Ring chromosome 8 syndrome
  • Ring chromosome 9 syndrome
  • Ring chromosome Y syndrome

Present on Admission (POA)

Q93.2 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here .

CMS POA Indicator Options and Definitions
POA Indicator CodePOA Reason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Q93.2 to ICD-9

  • 758.5 - Autosomal anomalies NEC (Approximate Flag)

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
      • Monosomies and deletions from the autosomes, NEC (Q93)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients

Genetic Disorders

Genes are the building blocks of heredity. They are passed from parent to child. They hold DNA, the instructions for making proteins. Proteins do most of the work in cells. They move molecules from one place to another, build structures, break down toxins, and do many other maintenance jobs.

Sometimes there is a mutation, a change in a gene or genes. The mutation changes the gene's instructions for making a protein, so the protein does not work properly or is missing entirely. This can cause a medical condition called a genetic disorder.

You can inherit a gene mutation from one or both parents. A mutation can also happen during your lifetime.

There are three types of genetic disorders:

  • Single-gene disorders, where a mutation affects one gene. Sickle cell anemia is an example.
  • Chromosomal disorders, where chromosomes (or parts of chromosomes) are missing or changed. Chromosomes are the structures that hold our genes. Down syndrome is a chromosomal disorder.
  • Complex disorders, where there are mutations in two or more genes. Often your lifestyle and environment also play a role. Colon cancer is an example.

Genetic tests on blood and other tissue can identify genetic disorders.

NIH: National Library of Medicine

[Learn More]