ICD-10-CM › Q00-QA1 › Q90-Q99 › Q91 Trisomy 18 and Trisomy 13 › Q91.0
Trisomy 18, nonmosaicism (meiotic nondisjunction)
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Trisomy 18, nonmosaicism (meiotic nondisjunction)
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from the Q90-Q99 section Chromosomal abnormalities, not elsewhere classified (Q90-Q99)
Excludes2 - not included here
- mitochondrial metabolic disorders (E88.4-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Extra
- Trifid
- Triple
- Additional
- Triplication
- Reduplication
- Edward's syndrome
- Duplication, duplex
- Additional > chromosome
- Accessory > chromosome > 18
- Duplication, duplex > chromosome NEC
- Supernumerary > organ or site not listed
- Redundant, redundancy > organ or site, congenital NEC
- Trisomy > 18 > meiotic nondisjunction
- Syndrome > trisomy > 18 > meiotic nondisjunction
Codes in the same group
| Code | Description | Status |
|---|---|---|
| Q91.1 | Trisomy 18, mosaicism (mitotic nondisjunction) | Valid |
| Q91.2 | Trisomy 18, translocation | Valid |
| Q91.3 | Trisomy 18, unspecified | Valid |
| Q91.4 | Trisomy 13, nonmosaicism (meiotic nondisjunction) | Valid |
| Q91.5 | Trisomy 13, mosaicism (mitotic nondisjunction) | Valid |
| Q91.6 | Trisomy 13, translocation | Valid |
| Q91.7 | Trisomy 13, unspecified | Valid |