T18.8XXA — Foreign body in other parts of alimentary tract, initial encounter
T18.8XXA is a billable, specific ICD-10-CM code for foreign body in other parts of alimentary tract, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category T18
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
T18.8XXA does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
T18.8XXA is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
- A57063Billing and Coding: Diagnostic and Therapeutic Esophagogastroduodenoscopy
Code history
T18.8XXA has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share T18.8. If T18.8XXA is not quite right, the correct code is usually one of these.
Questions about T18.8XXA
- Is T18.8XXA a billable ICD-10-CM code?
- Yes. T18.8XXA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does T18.8XXA sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Effects of foreign body entering through natural orifice (T15-T19).