ICD-10 · PDGM grouping
Q80-Q89 — Other congenital malformations
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.
OASIS-E2 v1.00.0 · ingested 2026-04-26
Codes in range
81
No clinical group
18
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
56 of the 81 codes in Q80-Q89 group to MMTA - Other, but the range is not uniform — it spreads across 3 clinical groups. A further 18 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Every code in Q80-Q89
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| Q800 | Ichthyosis vulgaris | None | Cannot group |
| Q801 | X-linked ichthyosis | None | Cannot group |
| Q802 | Lamellar ichthyosis | None | Cannot group |
| Q803 | Congenital bullous ichthyosiform erythroderma | None | Cannot group |
| Q804 | Harlequin fetus | None | Cannot group |
| Q808 | Other congenital ichthyosis | None | Cannot group |
| Q809 | Congenital ichthyosis, unspecified | None | Cannot group |
| Q810 | Epidermolysis bullosa simplex | A | Accepted |
| Q811 | Epidermolysis bullosa letalis | A | Accepted |
| Q812 | Epidermolysis bullosa dystrophica | A | Accepted |
| Q818 | Other epidermolysis bullosa | A | Accepted |
| Q819 | Epidermolysis bullosa, unspecified | None | Cannot group |
| Q820 | Hereditary lymphedema | C | Accepted |
| Q821 | Xeroderma pigmentosum | A | Accepted |
| Q822 | Congenital cutaneous mastocytosis | A | Accepted |
| Q823 | Incontinentia pigmenti | A | Accepted |
| Q824 | Ectodermal dysplasia (anhidrotic) | A | Accepted |
| Q825 | Congenital non-neoplastic nevus | A | Accepted |
| Q826 | Congenital sacral dimple | A | Accepted |
| Q828 | Other specified congenital malformations of skin | A | Accepted |
| Q829 | Congenital malformation of skin, unspecified | None | Cannot group |
| Q830 | Congenital absence of breast with absent nipple | A | Accepted |
| Q831 | Accessory breast | A | Accepted |
| Q832 | Absent nipple | A | Accepted |
| Q833 | Accessory nipple | A | Accepted |
| Q838 | Other congenital malformations of breast | A | Accepted |
| Q839 | Congenital malformation of breast, unspecified | None | Cannot group |
| Q840 | Congenital alopecia | A | Accepted |
| Q841 | Congenital morphological disturbances of hair, NEC | None | Cannot group |
| Q842 | Other congenital malformations of hair | None | Cannot group |
| Q843 | Anonychia | None | Cannot group |
| Q844 | Congenital leukonychia | None | Cannot group |
| Q845 | Enlarged and hypertrophic nails | None | Cannot group |
| Q846 | Other congenital malformations of nails | None | Cannot group |
| Q848 | Other specified congenital malformations of integument | A | Accepted |
| Q849 | Congenital malformation of integument, unspecified | None | Cannot group |
| Q8500 | Neurofibromatosis, unspecified | B | Accepted |
| Q8501 | Neurofibromatosis, type 1 | B | Accepted |
| Q8502 | Neurofibromatosis, type 2 | B | Accepted |
| Q8503 | Schwannomatosis | B | Accepted |
| Q8509 | Other neurofibromatosis | B | Accepted |
| Q851 | Tuberous sclerosis | A | Accepted |
| Q8581 | PTEN hamartoma tumor syndrome | A | Accepted |
| Q8582 | Other Cowden syndrome | A | Accepted |
| Q8583 | Von Hippel-Lindau syndrome | A | Accepted |
| Q8589 | Other phakomatoses, not elsewhere classified | A | Accepted |
| Q859 | Phakomatosis, unspecified | A | Accepted |
| Q860 | Fetal alcohol syndrome (dysmorphic) | A | Accepted |
| Q861 | Fetal hydantoin syndrome | A | Accepted |
| Q862 | Dysmorphism due to warfarin | A | Accepted |
| Q868 | Oth congen malform syndromes due to known exogenous causes | A | Accepted |
| Q870 | Congen malform syndromes predom affecting facial appearance | A | Accepted |
| Q8711 | Prader-Willi syndrome | A | Accepted |
| Q8719 | Other congen malform synd predom assoc with short stature | A | Accepted |
| Q872 | Congenital malformation syndromes predom involving limbs | A | Accepted |
| Q873 | Congenital malformation syndromes involving early overgrowth | A | Accepted |
| Q8740 | Marfan syndrome, unspecified | A | Accepted |
| Q87410 | Marfan syndrome with aortic dilation | A | Accepted |
| Q87418 | Marfan syndrome with other cardiovascular manifestations | A | Accepted |
| Q8742 | Marfan syndrome with ocular manifestations | A | Accepted |
| Q8743 | Marfan syndrome with skeletal manifestation | A | Accepted |
| Q875 | Oth congenital malformation syndromes w oth skeletal changes | A | Accepted |
| Q8781 | Alport syndrome | A | Accepted |
| Q8782 | Arterial tortuosity syndrome | A | Accepted |
| Q8783 | Bardet-Biedl syndrome | A | Accepted |
| Q8784 | Laurence-Moon syndrome | A | Accepted |
| Q8785 | MED13L syndrome | A | Accepted |
| Q8786 | Kleefstra syndrome | A | Accepted |
| Q8787 | Hao-Fountain Syndrome | A | Accepted |
| Q8788 | CTNNB1 syndrome | B | Accepted |
| Q8789 | Oth congenital malformation syndromes, NEC | A | Accepted |
| Q8901 | Asplenia (congenital) | A | Accepted |
| Q8909 | Congenital malformations of spleen | A | Accepted |
| Q891 | Congenital malformations of adrenal gland | A | Accepted |
| Q892 | Congenital malformations of other endocrine glands | A | Accepted |
| Q893 | Situs inversus | A | Accepted |
| Q894 | Conjoined twins | A | Accepted |
| Q897 | Multiple congenital malformations, not elsewhere classified | A | Accepted |
| Q8981 | Kabuki syndrome | A | Accepted |
| Q8989 | Other specified congenital malformations | A | Accepted |
| Q899 | Congenital malformation, unspecified | None | Cannot group |
Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff.