2026 ICD-10-CM Diagnosis Code T85.698AOther mechanical complication of other specified internal prosthetic devices, implants and grafts, initial encounter

ICD-10-CM Codes›S00–T88›T80-T88›T85

ICD-10-CM T85.698A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

T85.698A is a billable ICD-10-CM diagnosis code for other mechanical complication of other specified internal prosthetic devices, implants and grafts, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 919 through 921. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication of other surgical or medical care, injury, initial encounter.

Code Identity

ICD-10-CM Code
T85.698A
Billable Status
Yes — Valid for Submission
Code Describes
Other mechanical complication of other specified internal prosthetic devices, implants and grafts, initial encounter
Short Description
Mech compl of internal prosth dev/grft, init
Parent Code
T85.698
Other mechanical complication of other specified internal prosthetic devices, implants and grafts

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionT80-T88Complications of surgical and medical care, not elsewhere classified
CategoryT85Complications of other internal prosthetic devices, implants and grafts
This CodeT85.698AOther mechanical complication of other specified internal prosthetic devices, implants and grafts, initial encounter

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Airway device cuff overinflated
  • Airway device cuff problem
  • Airway device cuff underinflated
  • Blocked catheter
  • Deflation of tissue expander
  • Dislocation of ossicular prosthesis
  • Disorder of pancreatic stent
  • Equipment problem
  • Finding of respiratory device
  • Fractured maxillofacial prosthesis
  • Fractured orthodontic appliance
  • Fractured orthodontic appliance component
  • Loosening of prosthesis
  • Migration of implant or internal device
  • Obstruction of pancreatic stent
  • Orthodontic appliance finding
  • Orthodontic appliance loose
  • Orthodontic band fallen off
  • Orthodontic bracket fallen off
  • Pancreatic duct obstruction
  • Rupture of tissue expander
  • Tissue expander disorder
  • Ventilation tube blocked
  • Ventilation tube finding
  • Ventilation tube obscured by wax

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Complications of other internal prosthetic devices, implants and grafts (T85). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ037
Complication of other surgical or medical care, injury, initial encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert T85.698A to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
996.59 Malfunc oth device/graft
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About T85.698AOverview

Is T85.698A a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other mechanical complication of other specified internal prosthetic devices, implants and grafts, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character A in T85.698A mean?

The final character A marks the initial encounter: use it while the patient is receiving active treatment for other mechanical complication of other specified internal prosthetic devices, implants and grafts, such as an emergency visit or first evaluation.

What MS-DRG does T85.698A group to?

When other mechanical complication of other specified internal prosthetic devices, implants and grafts, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 919, 920, 921, with relative weights from 0.6884 to 1.8308 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of T85.698A?

Under the General Equivalence Mappings, other mechanical complication of other specified internal prosthetic devices, implants and grafts, initial encounter converts to ICD-9-CM 996.59 (malfunc oth device/graft). The mapping is approximate, so confirm the match fits the documentation.