ICD-10 · PDGM grouping
Z03 Encounter for medical observation for suspected diseases and conditions ruled out
All 14 codes in the Z03 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
14
Can lead a claim
0
Cannot lead a claim
14
What CMS assigns to Z03
None of the 14 codes is assigned a clinical group. None of the 14 is assigned a comorbidity subgroup. None can lead a claim.
Every code in Z03
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 |
|---|---|---|---|---|
| Z03.6 | Encounter for observation for suspected toxic effect from ingested substance ruled outCMS: Encntr for obs for susp toxic eff from ingest sub ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.7 Encounter for suspected maternal and fetal conditions ruled out | ||||
| Z03.71 | Encounter for suspected problem with amniotic cavity and membrane ruled outCMS: Encntr for susp prob w amnio cavity and membrane ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.72 | Encounter for suspected placental problem ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.73 | Encounter for suspected fetal anomaly ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.74 | Encounter for suspected problem with fetal growth ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.75 | Encounter for suspected cervical shortening ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.79 | Encounter for other suspected maternal and fetal conditions ruled outCMS: Encntr for oth suspected maternal and fetal cond ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.8 Encounter for observation for other suspected diseases and conditions ruled out | ||||
| Z03.81 Encounter for observation for suspected exposure to biological agents ruled out | ||||
| Z03.810 | Encounter for observation for suspected exposure to anthrax ruled outCMS: Encntr for obs for suspected exposure to anthrax ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.818 | Encounter for observation for suspected exposure to other biological agents ruled outCMS: Encntr for obs for susp expsr to oth biolg agents ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.82 Encounter for observation for suspected foreign body ruled out | ||||
| Z03.821 | Encounter for observation for suspected ingested foreign body ruled outCMS: Enctr for observation for suspected ingested fb ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.822 | Encounter for observation for suspected aspirated (inhaled) foreign body ruled outCMS: Enctr for obs for suspected aspirated (inhaled) fb ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.823 | Encounter for observation for suspected inserted (injected) foreign body ruled outCMS: Enctr for obs for suspected inserted (injected) fb ruled out | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.83 | Encounter for observation for suspected conditions related to home physiologic monitoring device ruled outCMS: Enctr for obs for susp cond rel to home physio mon dev R/O | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z03.89 | Encounter for observation for other suspected diseases and conditions ruled outCMS: Encntr for obs for oth suspected diseases and cond ruled out | 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.
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