POA Exempt: Chromosomal abnormalities, not elsewhere classified (Q90-Q99) ICD-10-CM
The 74 ICD-10-CM codes in this range are exempt from Present on Admission reporting for fiscal year 2027. Hospitals leave the POA field blank for them on inpatient claims: the codes describe circumstances, such as pre-existing conditions or the cause of an injury, where asking whether the condition was present at admission adds no information.
Exempt Codes in This Range 74 codes · 9 categories
Q90 Down syndrome4 codes
Q91 Trisomy 18 and Trisomy 138 codes
- 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 classified9 codes
- Q92.0 Whole chromosome trisomy, nonmosaicism (meiotic nondisjunction)
- Q92.1 Whole chromosome trisomy, mosaicism (mitotic nondisjunction)
- Q92.2 Partial trisomy
- Q92.5 Duplications with other complex rearrangements
- Q92.61 Marker chromosomes in normal individual
- Q92.62 Marker chromosomes in abnormal individual
- Q92.7 Triploidy and polyploidy
- Q92.8 Other specified trisomies and partial trisomies of autosomes
- Q92.9 Trisomy and partial trisomy of autosomes, unspecified
Q93 Monosomies and deletions from the autosomes, not elsewhere classified14 codes
- Q93.0 Whole chromosome monosomy, nonmosaicism (meiotic nondisjunction)
- Q93.1 Whole chromosome monosomy, mosaicism (mitotic nondisjunction)
- Q93.2 Chromosome replaced with ring, dicentric or isochromosome
- Q93.3 Deletion of short arm of chromosome 4
- Q93.4 Deletion of short arm of chromosome 5
- Q93.51 Angelman syndrome
- Q93.52 Phelan-McDermid syndrome
- Q93.59 Other deletions of part of a chromosome
- Q93.7 Deletions with other complex rearrangements
- Q93.81 Velo-cardio-facial syndrome
- Q93.82 Williams syndrome
- Q93.88 Other microdeletions
- Q93.89 Other deletions from the autosomes
- Q93.9 Deletion from autosomes, unspecified
Q95 Balanced rearrangements and structural markers, not elsewhere classified7 codes
- Q95.0 Balanced translocation and insertion in normal individual
- Q95.1 Chromosome inversion in normal individual
- Q95.2 Balanced autosomal rearrangement in abnormal individual
- Q95.3 Balanced sex/autosomal rearrangement in abnormal individual
- Q95.5 Individual with autosomal fragile site
- Q95.8 Other balanced rearrangements and structural markers
- Q95.9 Balanced rearrangement and structural marker, unspecified
Q96 Turner's syndrome7 codes
- Q96.0 Karyotype 45, X
- Q96.1 Karyotype 46, X iso (Xq)
- Q96.2 Karyotype 46, X with abnormal sex chromosome, except iso (Xq)
- Q96.3 Mosaicism, 45, X/46, XX or XY
- Q96.4 Mosaicism, 45, X/other cell line(s) with abnormal sex chromosome
- Q96.8 Other variants of Turner's syndrome
- Q96.9 Turner's syndrome, unspecified
Q97 Other sex chromosome abnormalities, female phenotype, not elsewhere classified6 codes
Q98 Other sex chromosome abnormalities, male phenotype, not elsewhere classified9 codes
- Q98.0 Klinefelter syndrome karyotype 47, XXY
- Q98.1 Klinefelter syndrome, male with more than two X chromosomes
- Q98.3 Other male with 46, XX karyotype
- Q98.4 Klinefelter syndrome, unspecified
- Q98.5 Karyotype 47, XYY
- Q98.6 Male with structurally abnormal sex chromosome
- Q98.7 Male with sex chromosome mosaicism
- Q98.8 Other specified sex chromosome abnormalities, male phenotype
- Q98.9 Sex chromosome abnormality, male phenotype, unspecified
Q99 Other chromosome abnormalities, not elsewhere classified10 codes
- Q99.0 Chimera 46, XX/46, XY
- Q99.1 46, XX true hermaphrodite
- Q99.2 Fragile X chromosome
- Q99.811 Usher syndrome, type 1
- Q99.812 Usher syndrome, type 2
- Q99.813 Usher syndrome, type 3
- Q99.818 Other Usher syndrome
- Q99.819 Usher syndrome, unspecified
- Q99.89 Other specified chromosome abnormalities
- Q99.9 Chromosomal abnormality, unspecified
Questions About This Range
Why are these codes POA exempt?
The codes for chromosomal abnormalities, not elsewhere classified describe circumstances where the Present on Admission question has no meaning, so CMS exempts them from the indicator. The exemption is published in the official FY 2027 CMS exempt file.
How many codes in this range are exempt?
The FY 2027 exempt list contains 74 codes in this range, effective October 1, 2026 through September 30, 2027.
Are these codes billable?
The exemption only removes the POA indicator requirement, it does not change how a code is used on claims. Billable status is shown per code: blue codes are billable, and any codes shown in the amber tone are category headers that need more characters.
More POA Exempt Code Ranges
Source: CMS FY 2027 ICD-10-CM POA exempt file, effective October 1, 2026 through September 30, 2027. See also the Medicare Code Edits and the MS-DRG list.
