T85.118D Breakdown (mechanical) of other implanted electronic stimulator of nervous system, subsequent encounter

ICD-10-CM T85.118D: Breakdown of other implanted electronic nervous system stimulator, subsequent encounter

ICD-10-CM code T85.118D identifies a subsequent encounter for the mechanical breakdown of an implanted electronic nervous system stimulator not specifically categorized elsewhere. The code is active for the 2026 version and is classified under the semantic type of injury or poisoning. It exists as a narrower concept beneath a parent code for the same mechanical breakdown without the subsequent encounter designation. 1 3

Plain-language overview

The terminology record assigns this code the published abbreviation of breakdown of an implanted electronic stimulator of the nervous system for a subsequent encounter. 1

What this code represents

The official label for T85.118D is the breakdown, mechanical in nature, of other implanted electronic stimulators of the nervous system, specifically for a subsequent encounter. 1

T85.118D is an active terminology concept that has narrower concepts and belongs to the semantic type of injury or poisoning within the ICD-10-CM version 2026. 1

Coding details

The parent concept for this specific subsequent encounter code is T85.118, which denotes the mechanical breakdown of other implanted electronic stimulators of the nervous system. 1

This code is listed alongside subsequent encounter codes for mechanical breakdowns of specific neurostimulator components, including brain electrodes, peripheral nerve electrodes, spinal cord electrodes, and generators. 3

Documentation considerations

The official terminology record for this diagnosis code specifies its exact preferred name and published abbreviation for the mechanical breakdown of an implanted electronic stimulator during a subsequent encounter. 1

What the sources add

While the terminology record defines the code hierarchy, the CMS definitions manual places it within a broader list of mechanical complications involving various implanted neurostimulator components for subsequent encounters. 1 3

Clinical context

Research literature indicates that electrical stimulation of the central nervous system involves surgically implanted neurostimulators used to treat conditions like Parkinson’s disease, epilepsy, and sensory restoration. 2

Coverage and utilization context

A Medicare billing article references mechanical complications of implanted electronic neurostimulator peripheral nerve electrodes, illustrating that such device breakdowns appear in payer coverage contexts. 4

Sources

1. ICD-10-CM T85.118D terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Effects of central nervous system electrical stimulation on non-neuronal cells — pmc.ncbi.nlm.nih.gov; accessed 2026-07-27.
3. ICD-10-CM/PCS MS-DRG v41.0 Definitions Manual — cms.gov; accessed 2026-07-27.
4. Article - Billing and Coding: Sacral Nerve Stimulation for Urinary and Fecal Incontinence (A53359) — cms.gov; accessed 2026-07-27.