ICD-10 · PDGM grouping
Z18 Retained foreign body fragments
All 14 codes in the Z18 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 Z18
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 Z18
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 |
|---|---|---|---|---|
| Z18.0 Retained radioactive fragments | ||||
| Z18.01 | Retained depleted uranium fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.09 | Other retained radioactive fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.1 Retained metal fragments | ||||
| Z18.10 | Retained metal fragments, unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.11 | Retained magnetic metal fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.12 | Retained nonmagnetic metal fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.2 | Retained plastic fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.3 Retained organic fragments | ||||
| Z18.31 | Retained animal quills or spines | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.32 | Retained tooth | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.33 | Retained wood fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.39 | Other retained organic fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.8 Other specified retained foreign body | ||||
| Z18.81 | Retained glass fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.83 | Retained stone or crystalline fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.89 | Other specified retained foreign body fragments | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Z18.9 | Retained foreign body fragments, unspecified material | 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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