T85.590 Other mechanical complication of bile duct prosthesis

ICD-10-CM Code T85.590: Other Mechanical Complication of Bile Duct Prosthesis

ICD-10-CM code T85.590 represents other mechanical complications of a bile duct prosthesis. The terminology is active and classified under injuries or poisonings. It falls under a broader parent category for mechanical complications of gastrointestinal prosthetic devices, implants, and grafts. 1 4

Plain-language overview

Code T85.590 identifies a mechanical issue involving a bile duct prosthesis, serving as a specific diagnostic concept within the ICD-10-CM system for this exact type of event. 1

What this code represents

The official display label for T85.590 is other mechanical complication of bile duct prosthesis, and the concept is semantically typed as an injury or poisoning. 1

This diagnosis code has no narrower child concepts within the ICD-10-CM terminology, according to the active terminology record for this specific code. 1

Coding details

The parent concept for T85.590 is T85.59, which covers other mechanical complications of gastrointestinal prosthetic devices, implants, and grafts, establishing its broader category. 1

The National Cancer Institute terminology record defines the base code T85.590, while the CMS definitions manual lists a subsequent encounter variation, and the VSAC browser confirms the descriptor. 1 2 4

Documentation considerations

The active terminology record for T85.590 assigns the official descriptor of other mechanical complication of bile duct prosthesis to this specific diagnosis code. 1

Coverage and utilization context

A Medicare billing article includes a related code for other mechanical complications of breast prostheses, but the provided text does not mention T85.590 or its coverage rules. 3

What the sources add

The National Cancer Institute terminology record confirms the code's active status and semantic type, while the VSAC code system browser provides hierarchical term context for the descriptor. 1 4

Questions to verify

The base T85.590 code lacks an explicit encounter character in the terminology record, while the CMS manual references a subsequent encounter version of this bile duct prosthesis complication. 1 2

Sources

1. ICD-10-CM T85.590 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. ICD-10-CM/PCS MS-DRGv33 Definitions Manual — cms.gov; accessed 2026-07-27.
3. Article - Billing and Coding: Breast Imaging Mammography/Breast Echography (Sonography)/Breast MRI/Ductography (A56448) — cms.gov; accessed 2026-07-27.
4. Browse Code Systems — vsac.nlm.nih.gov; accessed 2026-07-27.