ICD-10 · PDGM grouping
B85-B89 — Pediculosis, acariasis and other infestations
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
Codes in range
23
No clinical group
2
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
20 of the 23 codes in B85-B89 group to MMTA - Infectious Disease, Neoplasms, and Blood-Forming Diseases, but the range is not uniform — it spreads across 2 clinical groups. A further 2 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in B85-B89
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
Every code in B85-B89
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| B850 | Pediculosis due to Pediculus humanus capitis | K | Can lead a claim |
| B851 | Pediculosis due to Pediculus humanus corporis | K | Can lead a claim |
| B852 | Pediculosis, unspecified | K | Can lead a claim |
| B853 | Phthiriasis | K | Can lead a claim |
| B854 | Mixed pediculosis and phthiriasis | K | Can lead a claim |
| B86 | Scabies | K | Can lead a claim |
| B870 | Cutaneous myiasis | K | Can lead a claim |
| B871 | Wound myiasis | C | Can lead a claim |
| B872 | Ocular myiasis | K | Can lead a claim |
| B873 | Nasopharyngeal myiasis | K | Can lead a claim |
| B874 | Aural myiasis | K | Can lead a claim |
| B8781 | Genitourinary myiasis | K | Can lead a claim |
| B8782 | Intestinal myiasis | K | Can lead a claim |
| B8789 | Myiasis of other sites | K | Can lead a claim |
| B879 | Myiasis, unspecified | K | Can lead a claim |
| B8801 | Infestation by Demodex mites | K | Can lead a claim |
| B8809 | Other acariasis | K | Can lead a claim |
| B881 | Tungiasis [sandflea infestation] | K | Can lead a claim |
| B882 | Other arthropod infestations | K | Can lead a claim |
| B883 | External hirudiniasis | K | Can lead a claim |
| B888 | Other specified infestations | K | Can lead a claim |
| B889 | Infestation, unspecified | None | Cannot lead a claim |
| B89 | Unspecified parasitic disease | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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.
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