ICD-10 · PDGM grouping
Z11 Encounter for screening for infectious and parasitic diseases
All 12 codes in the Z11 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.
Codes in family
12
Can lead a claim
1
Cannot lead a claim
11
What CMS assigns to Z11
1 of the 12 codes groups to MMTA - Other; 11 are assigned no clinical group. None of the 12 is assigned a comorbidity subgroup. 1 of the 12 can lead a claim.
Every code in Z11
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| Z11.0 | Encounter for screening for intestinal infectious diseases | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.1 | Encounter for screening for respiratory tuberculosis | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.2 | Encounter for screening for other bacterial diseases | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.3 | Encounter for screening for infections with a predominantly sexual mode of transmissionCMS: Encntr screen for infections w sexl mode of transmiss | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.4 | Encounter for screening for human immunodeficiency virus [HIV]CMS: Encounter for screening for human immunodeficiency virus | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.5 Encounter for screening for other viral diseases | ||||
| Z11.51 | Encounter for screening for human papillomavirus (HPV) | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.52 | Encounter for screening for COVID-19 | Can lead a claim | A | None |
| Z11.59 | Encounter for screening for other viral diseases | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.6 | Encounter for screening for other protozoal diseases and helminthiasesCMS: Encntr screen for oth protozoal diseases and helminthiases | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.7 | Encounter for testing for latent tuberculosis infection | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.8 | Encounter for screening for other infectious and parasitic diseasesCMS: Encounter for screening for oth infec/parastc diseases | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z11.9 | Encounter for screening for infectious and parasitic diseases, unspecifiedCMS: Encounter for screening for infec/parastc diseases, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. 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. Read the first issue