T85.735A

Infection and inflammatory reaction due to cranial or spinal infusion catheter, initial encounter

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 3 never code together

T85code

Excludes2

failure and rejection of transplanted organs and tissue (T86.-)T86.-

S00-T88chapter

Excludes2

birth trauma (P10-P15)P10-P15
obstetric trauma (O70-O71)O70-O71

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3

A initial encounter this code

D subsequent encounter

S sequela

Instructional notes 4

T85.7code

Use additional code

code to identify infection

S00-T88chapter

Notes

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.

Use additional code

code to identify any retained foreign body, if applicable (Z18.-)Z18.-

Index entries leading here 4 filed at T85.735

The index files this at T85.735. The tabular extends it — laterality, staging, or the 7th character — so these entries lead to the family rather than to T85.735A exactly.

Inflammation, inflamed, inflammatory (with exudation)
- due to device, implant or graft — see also Complications, by site and type, infection or inflammation
  - catheter T85.79
    - infusion T82.7
      - cranial T85.735
      - intrathecal T85.735
      - spinal (epidural) (subdural) T85.735
      - subarachnoid T85.735
Complication (s) (from) (of)
- catheter (device) NEC — see also Complications, prosthetic device or implant
  - cranial infusion
    - infection and inflammation T85.735
  - subdural infusion T85.9
    - infection and inflammation T85.735
  - epidural infusion T85.9
    - infection and inflammation T85.735
  - intrathecal infusion
    - infection and inflammation T85.735
  - spinal infusion
    - infection and inflammation T85.735
  - subarachnoid infusion
    - infection and inflammation T85.735
Sepsis (generalized) (unspecified organism) A41.9
- due to device, implant or graft T85.79
  - catheter NEC T85.79
    - infusion NEC T82.7
      - spinal (cranial) (epidural) (intrathecal) (spinal) (subarachnoid) (subdural) T85.735
Infection, infected, infective (opportunistic) B99.9
- due to or resulting from
  - device, implant or graft T85.79
    - catheter NEC T85.79
      - infusion NEC T82.7
        
        cranial T85.735
        intrathecal T85.735
        spinal (epidural) (subdural) T85.735
        subarachnoid T85.735

Alongside this code 2 same parent — T85.735

T85.735D I/I react d/t cranial or spinal infusion catheter, subs T85.735S I/I react d/t cranial or spinal infusion catheter, sequela

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

CMS22HCC176 ESRD21HCC176 ESRD24HCC176

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: T85.735
Block: T07-T88
Siblings: 2

Present FY2024–FY2027.