MCMedicalCodingSoftware
T18.4

T18.4: Foreign body in colon

Non-billable headerICD-10-CM

T18.4 is a non-billable header ICD-10-CM code for foreign body in colon. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T18

A
initial encounter
D
subsequent encounter
S
sequela

Excludes2 inherited from the categories above T18.4

Not part of this code, but both may be coded when both are present.

Written on T18: Foreign body in alimentary tract

  • foreign body in pharynx (T17.2-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Foreign body›alimentary tract›colon
  • Foreign body›entering through orifice›appendix
  • Foreign body›entering through orifice›cecum
  • Foreign body›entering through orifice›colon
  • Foreign body›entering through orifice›large intestine
  • Foreign body›entering through orifice›intestine›large

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T18.4

3 child codes. Green means billable.

Other codes under T18

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.