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ICD-10-CM Codes
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Q00-Q99
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Q90-Q99
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Q91-
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2023 ICD-10-CM Diagnosis Code Q91.1
2023 ICD-10-CM Diagnosis Code Q91.1
Trisomy 18, mosaicism (mitotic nondisjunction)
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
- Q91.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM Q91.1 became effective on October 1, 2022.
- This is the American ICD-10-CM version of Q91.1 - other international versions of ICD-10 Q91.1 may differ.
The following code(s) above
Q91.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
Q91.1:
- Trisomy 18 - mitotic nondisjunction mosaicism
- Trisomy 18, mosaicism
Present On AdmissionPOA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
- Q91.1 is considered exempt from POA reporting.
ICD-10-CM Q91.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
- 884 Organic disturbances and intellectual disability
Convert Q91.1 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
- Syndrome - see also Disease
- trisomy Q92.9
ICD-10-CM Diagnosis Code Q92.9
Trisomy and partial trisomy of autosomes, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
- 18 Q91.3
ICD-10-CM Diagnosis Code Q91.3
Trisomy 18, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
- mitotic nondisjunction Q91.1
- mosaicism Q91.1
- Trisomy (syndrome) Q92.9
ICD-10-CM Diagnosis Code Q92.9
Trisomy and partial trisomy of autosomes, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
- 18 (partial) Q91.3
ICD-10-CM Diagnosis Code Q91.3
Trisomy 18, unspecified
2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
- mitotic nondisjunction Q91.1
- mosaicism Q91.1
ICD-10-CM Codes Adjacent To Q91.1
Q89.7 Multiple congenital malformations, not elsewhere classified
Q89.8 Other specified congenital malformations
Q89.9 Congenital malformation, unspecified
Q90.0 Trisomy 21, nonmosaicism (meiotic nondisjunction)
Q90.1 Trisomy 21, mosaicism (mitotic nondisjunction)
Q90.2 Trisomy 21, translocation
Q90.9 Down syndrome, unspecified
Q91 Trisomy 18 and Trisomy 13
Q91.0 Trisomy 18, nonmosaicism (meiotic nondisjunction)
Q91.1
Trisomy 18, mosaicism (mitotic nondisjunction)
Q91.2 Trisomy 18, translocation
Q91.3 Trisomy 18, unspecified
Q91.4 Trisomy 13, nonmosaicism (meiotic nondisjunction)
Q91.5 Trisomy 13, mosaicism (mitotic nondisjunction)
Q91.6 Trisomy 13, translocation
Q91.7 Trisomy 13, unspecified
Q92 Other trisomies and partial trisomies of the autosomes, not elsewhere classified
Q92.0 Whole chromosome trisomy, nonmosaicism (meiotic nondisjunction)
Q92.1 Whole chromosome trisomy, mosaicism (mitotic nondisjunction)
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
