MCMCB Pro
T86.859

T86.859Unspecified complication of intestine transplant

Billable / specific codeICD-10-CM

T86.859 is a billable, specific ICD-10-CM code for unspecified complication of intestine transplant. It is valid for submission on a claim.

Risk adjustment

T86.859 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 77 Intestine Transplant Status/Complications1.172 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

T86.859 is named in 11 Medicare coverage policies 11 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52466Nebulizers - Policy Article
  • A52466Nebulizers - Policy Article
  • A52466Nebulizers - Policy Article
  • A52466Nebulizers - Policy Article

How T86.859 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to T86.859.

  • Complicationtransplantintestine

Related codes at this level

Codes that share T86.85. If T86.859 is not quite right, the correct code is usually one of these.

Questions about T86.859

Is T86.859 a billable ICD-10-CM code?
Yes. T86.859 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T86.859 sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Complications of surgical and medical care, not elsewhere classified (T80-T88).
ICD-10-CMFY2026-Apr· effective April 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.