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Code
Description

ICD-10-CM Code Q90.0
Trisomy 21, nonmosaicism (meiotic nondisjunction)

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
POA Exempt
POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.
| ICD-10 from 2011 - 2016

Q90.0 is a billable ICD code used to specify a diagnosis of trisomy 21, nonmosaicism (meiotic nondisjunction). A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

IndicatorMeaningCMS Will Pay CC/MCC DRG Costs
YDiagnosis was present at time of inpatient admissionYes
NDiagnosis was not present at time of inpatient admissionNo
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.No
WClinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.Yes
1Exempt from POA reportingNo


The ICD code Q90 is used to code Aneuploidy

Aneuploidy is the presence of an abnormal number of chromosomes in a cell, for example when having 45 or 47 chromosomes when 46 is expected in a human cell. It does not include a difference of one or more complete sets of chromosomes, which is called euploidy. An extra or missing chromosome is a common cause of genetic disorders, including some human birth defects. Some cancer cells also have abnormal numbers of chromosomes. Aneuploidy originates during cell division when the chromosomes do not separate properly between the two cells.

Specialty: Medical Genetics
MeSH Code: D000782
ICD 9 Code: 758

Chromosomes in Down syndrome, the most common condition due to aneuploidy. Notice the three copies of chromosome 21 in the last row.

MS-DRG Mapping

  • DRG Group #884 - Organic disturbances and mental retardation.

Related Concepts SNOMET-CT

  • Trisomy 21- meiotic nondisjunction (disorder)

Coding Advice SNOMET-CT

  • Consider additional code to identify specific condition or disease

ICD-10-CM Alphabetical Index References for 'Q90.0 - Trisomy 21, nonmosaicism (meiotic nondisjunction)'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Q90.0. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Down's syndrome (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code Q90.0 and a single ICD9 code, 758.0 is an approximate match for comparison and conversion purposes.


Parent Code: Q90 - Down syndrome

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Q900