T85.810D Embolism due to nervous system prosthetic devices, implants and grafts, subsequent encounter

ICD-10-CM T85.810D: Embolism due to nervous system prosthetic devices, implants and grafts, subsequent encounter

ICD-10-CM code T85.810D represents an embolism caused by nervous system prosthetic devices, implants, and grafts during a subsequent encounter. The code is organized under the T85 category for complications of internal prosthetic devices. The available public sources establish the code tree placement and label, while specific clinical definitions and documentation guidelines are not provided. 2 3

Plain-language overview

Code T85.810D identifies an embolism associated with nervous system prosthetic devices, implants, and grafts during a subsequent encounter. This plain-language description is drawn directly from the official code label provided in the source. 3

What this code represents

The code T85.810D is structured within the T85 category, which covers complications of other internal prosthetic devices, implants, and grafts. The source places this specific code among other nervous system device complications, such as hemorrhage, thrombosis, and fibrosis. 3

Coding details

The seventh character D in T85.810D designates a subsequent encounter. The source explicitly distinguishes this from T85.810A, which uses the seventh character A to indicate an initial encounter for the same embolism condition. 3

The source lists T85.810D alongside other subsequent encounter codes for nervous system device complications, including T85.830D for hemorrhage, T85.840D for pain, and T85.860D for thrombosis. This grouping establishes its placement within the nervous system complication code tree. 3

Documentation considerations

The available source provides the code label and tree placement for T85.810D but does not detail specific clinical or medical documentation elements needed to support its use. No documentation requirements are established by the provided text. 3

What the sources add

While S3 provides the code tree and label for T85.810D, S2 references the initial encounter code T85.810A in a Medicare article concerning speech-language pathology billing. This comparison shows the initial version of the code appears in payer guidance, while the subsequent encounter version is not mentioned in that article. 2 3

S1 lists subsequent encounter codes for complications involving gastrointestinal and other specified internal prosthetic devices, including embolism due to internal prosthetic devices. This adds context that the broader T85 coding structure includes embolism complications for various internal prosthetic device types beyond the nervous system. 1

Coverage and utilization context

S2 mentions the initial encounter code T85.810A in a Medicare billing and coding article for speech-language pathology. The provided text does not state that this inclusion guarantees coverage or establish any specific coverage rules for the subsequent encounter code T85.810D. 2

Questions to verify

The sources do not establish the clinical definition of a subsequent encounter or the exact criteria that differentiate it from an initial encounter. Verifying the official ICD-10-CM guidelines is necessary to confirm the correct application of the seventh character D. 3

Sources

1. ICD-10-CM/PCS MS-DRGv33 Definitions Manual — cms.gov; accessed 2026-07-25.
2. Article - Billing and Coding: Speech-Language Pathology (A57040) — cms.gov; accessed 2026-07-25.
3. ICD-10-CM 2024 | T85 - Complications of other internal prosthetic devices, implants and grafts — unboundmedicine.com; accessed 2026-07-25.