M79.5 vs T18.3XXS
M79.5 (Residual foreign body in soft tissue) compared with T18.3XXS (Foreign body in small intestine, sequela), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. T18.3XXS carries an Excludes2 note covering M79.5: “residual foreign body in soft tissue (M79.5)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M79.5Residual foreign body in soft tissue | T18.3XXSForeign body in small intestine, sequela | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Residual foreign body in soft tissue is a billable ICD-10-CM diagnosis code (M79.5). | Foreign body in small intestine, sequela is a billable ICD-10-CM diagnosis code (T18.3S). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T18 |
| Use additional code | — | code, if known, for foreign body entering into or through a natural orifice (W44.-) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources