Retained foreign body fragments
19 codes in this section
About Section Z18
Section Z18 (Z18-Z18) covers retained foreign body fragments. It sits within the Factors influencing health status and contact with health services chapter (Z00-Z99). This section contains 19 ICD-10-CM codes, 14 billable diagnoses you can submit on a claim, and 5 non-billable header codes used to organize the hierarchy.
Codes are organized below by 3-character root. Click the root to see all subcodes underneath it, or click any individual code for full coverage data, payer policies, and linked CPT procedures.
Codes in Z18
Grouped by 3-character root code. Click any code for full detail.
| Z18.0 | Retained radioactive fragments | Header |
| Z18.01 | Retained depleted uranium fragments | Billable |
| Z18.09 | Other retained radioactive fragments | Billable |
| Z18.1 | Retained metal fragments | Header |
| Z18.10 | Retained metal fragments, unspecified | Billable |
| Z18.11 | Retained magnetic metal fragments | Billable |
| Z18.12 | Retained nonmagnetic metal fragments | Billable |
| Z18.2 | Retained plastic fragments | Billable |
| Z18.3 | Retained organic fragments | Header |
| Z18.31 | Retained animal quills or spines | Billable |
| Z18.32 | Retained tooth | Billable |
| Z18.33 | Retained wood fragments | Billable |
| Z18.39 | Other retained organic fragments | Billable |
| Z18.8 | Other specified retained foreign body | Header |
| Z18.81 | Retained glass fragments | Billable |
| Z18.83 | Retained stone or crystalline fragments | Billable |
| Z18.89 | Other specified retained foreign body fragments | Billable |
| Z18.9 | Retained foreign body fragments, unspecified material | Billable |
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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