2027 ICD-10-CM Diagnosis Code T85.695SOther mechanical complication of other nervous system device, implant or graft, sequela

ICD-10-CM Codes›S00–T88›T80-T88›T85

ICD-10-CM T85.695S
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T85.695S is a billable ICD-10-CM diagnosis code for other mechanical complication of other nervous system device, implant or graft, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. Coders also document this condition as disconnection of implantable electrode of neurological device. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.

Code Identity

ICD-10-CM Code
T85.695S
Billable Status
Yes — Valid for Submission
Code Describes
Other mechanical complication of other nervous system device, implant or graft, sequela
Short Description
Mech compl of nervous sys device, implant or graft, sequela
Parent Code
T85.695
Other mechanical complication of other nervous system device, implant or graft

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 CodeT85.695SOther mechanical complication of other nervous system device, implant or graft, sequela

Present on Admission (POA)Billing

T85.695S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Complications of surgical and medical care, not elsewhere classified (T80-T88).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disconnection of implantable electrode of neurological device
  • Equipment disconnected
  • Intrathecal pump medication overdose
  • Medication dose too high
  • Overdose of medication caused by intrathecal pump failure
  • Underdose of medication caused by intrathecal pump failure
  • Underdose of medication via intrathecal pump

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 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to T85.695S: its own notes plus those printed at T85, block T80-T88, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From T85 Complications of other internal prosthetic devices, implants and grafts applies to 288 codes
  • failure and rejection of transplanted organs and tissue (T86.-)
From Block T80-T88 Complications of surgical and medical care, not elsewhere classified applies to 1,683 codes
  • any encounters with medical care for postprocedural conditions in which no complications are present, such as:
  • artificial opening status (Z93.-)
  • closure of external stoma (Z43.-)
  • fitting and adjustment of external prosthetic device (Z44.-)
  • burns and corrosions from local applications and irradiation (T20-T32)
  • complications of surgical procedures during pregnancy, childbirth and the puerperium (O00-O9A)
  • mechanical complication of respirator [ventilator] (J95.850)
  • poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)
  • postprocedural fever (R50.82)
  • specified complications classified elsewhere, such as:
  • cerebrospinal fluid leak from spinal puncture (G97.0)
  • colostomy malfunction (K94.0-)
  • disorders of fluid and electrolyte imbalance (E86-E87)
  • functional disturbances following cardiac surgery (I97.0-I97.1)
  • intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
  • ostomy complications (J95.0-, K94.-, N99.5-)
  • postgastric surgery syndromes (K91.1)
  • postlaminectomy syndrome NEC (M96.1)
  • postmastectomy lymphedema syndrome (I97.2)
  • postsurgical blind-loop syndrome (K91.2)
  • ventilator associated pneumonia (J95.851)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Block T80-T88 Complications of surgical and medical care, not elsewhere classified applies to 1,683 codes
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
  • code(s) to identify the specified condition resulting from the complication
  • code to identify devices involved and details of circumstances (Y62-Y82)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

From T85 Complications of other internal prosthetic devices, implants and grafts applies to 288 codes
  • The appropriate 7th character is to be added to each code from category T85
Values for category T85 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela this code

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Clinical ClassificationClinical

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

CCSR INJ076
Complication, sequela
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert T85.695S to ICD-9-CMHistory

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

ICD-9-CM
909.3 Late eff surg/med compl
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement T85.695S replaces the following previously assigned code(s):

  • T85.698S - Mech compl of internal prosth dev/grft, sequela
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About T85.695SOverview

Is T85.695S a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other mechanical complication of other nervous system device, implant or graft, sequela on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What does the 7th character S in T85.695S mean?

The final character S makes this a sequela code: it reports a lingering problem that remains after the other mechanical complication of other nervous system device, implant or graft itself has resolved, not the original event.

What MS-DRG does T85.695S group to?

When other mechanical complication of other nervous system device, implant or graft, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 923, 922, with relative weights from 0.9980 to 1.6248 depending on complications. Higher weights mean higher Medicare reimbursement.

Is T85.695S exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other mechanical complication of other nervous system device, implant or graft, sequela on inpatient claims. The code appears in the Complications of surgical and medical care, not elsewhere classified (T80-T88) range of the CMS exempt list.

What is the ICD-9 equivalent of T85.695S?

Under the General Equivalence Mappings, other mechanical complication of other nervous system device, implant or graft, sequela converts to ICD-9-CM 909.3 (late eff surg/med compl). The mapping is approximate, so confirm the match fits the documentation.