ICD-10-CM · Chapter 21 · Z00–Z99
Z18.31
Retained animal quills or spines
Factors influencing health status and contact with health services
Quick facts
- Code
- Z18.31
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 21 — Factors influencing health status and contact with health services
- Category
- Z18 — Retained foreign body fragments
- Specificity
- 5 characters
How coders use this code
ICD-10-CM Z18.31 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of retained animal quills or spines. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in Z18
- Z18Retained foreign body fragments
- Z18.0Retained radioactive fragments
- Z18.01Retained depleted uranium fragments
- Z18.09Other retained radioactive fragments
- Z18.1Retained metal fragments
- Z18.10Retained metal fragments, unspecified
- Z18.11Retained magnetic metal fragments
- Z18.12Retained nonmagnetic metal fragments
- Z18.2Retained plastic fragments
- Z18.3Retained organic fragments
- Z18.32Retained tooth
- Z18.33Retained wood fragments
- Z18.39Other retained organic fragments
- Z18.8Other specified retained foreign body
- Z18.81Retained glass fragments
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