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T85.1 ICD-10-CA code: Mechanical complication of implanted electronic stimulator of nervous system

T85.1 is the ICD-10-CA code for “Mechanical complication of implanted electronic stimulator of nervous system” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.

Official description

T85.1

Mechanical complication of implanted electronic stimulator of nervous system

Short description: Mech comp impl electrn stimlr nrvs sys

ICD-10-CA · Canada · Also written T851

Index terms

Entries in CIHI’s alphabetical index that lead to T85.1. Searching the index by the condition the note names is how coders reach this code.

  • Complication, complications (from) (of), neurostimulator, mechanical
  • Complication, complications (from) (of), brain neurostimulator (electrode), mechanical
  • Complication, complications (from) (of), nervous system, electronic stimulator (electrode(s)), mechanical
  • Complication, complications (from) (of), peripheral nerve device, implant or graft, electronic stimulator, mechanical
  • Breakdown, device, graft or implant, electronic (electrode) (pulse generator) (stimulator), nervous system (brain) (peripheral nerve) (spinal)
  • Malposition, device, implant or graft, electronic (electrode) (pulse generator) (stimulator), nervous system (brain) (peripheral nerve) (spinal)
  • Protrusion, protrusio, device, implant or graft, electronic (electrode) (pulse generator) (stimulator), nervous system (brain) (peripheral nerve) (spinal)
  • Displacement, displaced, device, implant or graft, electronic (electrode) (pulse generator) (stimulator), nervous system (brain) (peripheral nerve) (spinal)
  • Complication, complications (from) (of), electronic stimulator device (electrode(s)) (pulse generator), nervous system (brain) (peripheral nerve) (spinal cord), mechanical
  • Perforation, perforated (nontraumatic), by, device, implant or graft, electronic (electrode) (pulse generator) (stimulator), nervous system (brain) (peripheral nerve) (spinal)

Notes for T85.1

As CIHI prints them, with any note T85.1 takes from the headings above it.

Includes

  • Conditions listed in T82.0 due to electronic neurostimulator (electrode) of:• brain• peripheral nerve• spinal cord

Use additional code

Add a code for this detail when the note documents it.

Excludes

Conditions classified elsewhere.

  • Failure and rejection of transplanted organs and tissues (xenograft) (homograft) (allograft) (T86.-)From T85 Complications of other internal prosthetic devices, implants and grafts
  • Adverse effects of drugs and medicaments (A00-R99, T78.-)any encounters with medical care for postoperative 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-O99)poisoning and toxic effects of drugs and chemicals (T36-T65)specified complications classified elsewhere, such as:• cataract (lens) fragments in eye following cataract surgery (H59.80)• colostomy malfunction (K91.4)• complications associated with artificial fertilization (N98.-)• disorders of fluid and electrolyte balance (E86-E87)• functional disturbance following cardiac surgery or due to presence of cardiac prosthesis (I97.0-I97.1)• postgastric surgery syndromes (K91.1)• postlaminectomy syndrome NEC (M96.1)• postmastectomy lymphoedema syndrome (I97.2)• postsurgical blind-loop syndrome (K91.2)From T80-T88 Complications of surgical and medical care, not elsewhere classified
  • Birth trauma (P10-P15)obstetric trauma (O70-O71)From Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)

Note

  • 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 multiple or unspecified body regions as well as poisoning and certain other consequences of external causes.Where multiple sites of injury are specified in the titles, the word "with" indicates involvement of both sites, and the word "and" indicates involvement of either or both sites.The principle of multiple coding of injuries should be followed wherever possible.Combination categories for multiple injuries is provided for use when there are insufficient detail as to the nature of the individual conditions, or for primary tabulation purposes when it is more convenient to record single code; otherwise, the component injuries should be coded separately.Reference should also be made to the coding rules and guidelines.The blocks of the S-section as well as (T00-T14 and T90-T98) contain injuries at the three-character level classified by type as follows:Superficial injury including:abrasionblister (nonthermal)contusion, including bruise and haematomainjury from superficial foreign body (splinter) without major open woundinsect bite (nonvenomous)Open wound including:animal bitecutlacerationpuncture wound:• NOS• with (penetrating) foreign bodyFracture including:Fracture:closed: comminuted, depressed, elevated, fissured, greenstick, impacted, linear, simple, slipped epiphysis, spiral — with or without delayed healingdislocateddisplacedFracture:open: compound, infected, missile, puncture, with foreign body — with or without delayed healingExcludes:malunion of fracture (M84.0)nonunion of fracture [pseudoarthrosis] (M84.1)pathological fracture (M84.4):• with osteoporosis (M80.-)stress fracture (M84.3)Dislocation, sprain and strain including:avulsion, laceration, sprain, strain, traumatic: haemarthosis, rupture, subluxation, tear of cartilage, joint (capsule), ligamentInjury to nerves and spinal cord including:complete or incomplete lesion of spinal cordlesion incontinuity of nerves and spinal cordtraumatic:• division of nerve• haematomyelia• paralysis (transient)• paraplegia• quadriplegiaInjury to blood vessels includingavulsion, cut, laceration, traumatic: aneurysm or fistula (arteriovenous), arterial haematoma, rupture of blood vesselsInjury of muscle, fascia and tendon including:avulsion, cut, laceration, strain, traumatic rupture of muscle, fascia and tendonCrushing InjuryTraumatic amputationInjury to internal organs including:blast injuries, bruise, concussion injuries, crushing, laceration, traumatic: haematoma, puncture, rupture, tear of internal organsOther and unspecified injuriesFrom Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)

Where T85.1 sits

  1. 1ChapterChapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98)
  2. 2Block T80-T88Complications of surgical and medical care, not elsewhere classified
  3. 3Category T85Complications of other internal prosthetic devices, implants and grafts
  4. 4Valid code T85.1Mechanical complication of implanted electronic stimulator of nervous system

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See T85.1 in the CIHI source

Frequently asked questions

What does ICD-10-CA code T85.1 mean?

T85.1 is the ICD-10-CA code for “Mechanical complication of implanted electronic stimulator of nervous system” in CIHI’s ICD-10-CA FY 2026–2027 release.

Where is T85.1 in ICD-10-CA?

T85.1 sits under T85 Complications of other internal prosthetic devices, implants and grafts, within T80-T88 Complications of surgical and medical care, not elsewhere classified, within Chapter 19: Injury, poisoning and certain other consequences of external causes (S00-T98).

What coding notes apply to T85.1?

ICD-10-CA lists Includes, Excludes, Use additional code, Note notes for T85.1, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside T85.1

T85.0Mechanical complication of ventricular intracranial (communicating) shuntT85.2Mechanical complication of intraocular lensT85.3Mechanical complication of other ocular prosthetic devices, implants and graftsT85.4Mechanical complication of breast prosthesis and implantT85.5Mechanical complication of gastrointestinal prosthetic devices, implants and graftsT85.6Mechanical complication of other specified internal prosthetic devices, implants and graftsT85.7Infection and inflammatory reaction due to other internal prosthetic devices, implants and graftsT85.8Other complications of internal prosthetic devices, implants and grafts, not elsewhere classifiedT85.9Unspecified complication of internal prosthetic device, implant and graft