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ICD-10-CM 2027 diagnosis code

Z46.2Encounter for fitting and adjustment of other devices related to nervous system and special senses

✓ Billable / specificPOA exempt

Z46.2 is a valid, billable ICD-10-CM code for encounter for fitting and adjustment of other devices related to nervous system and special senses. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Encntr for fit/adjst of dev rel to nrv sys and specl senses

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z46.2

Z46.2 is the ICD-10-CM diagnosis code for encounter for fitting and adjustment of other devices related to nervous system and special senses. It belongs to category Z46 (encounter for fitting and adjustment of other devices), block Z40-Z53 (Encounters for other specific health care) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Z46 (encounter for fitting and adjustment of other devices), Z46.2 is specifically for encounter for fitting and adjustment of other devices related to nervous system and special senses. Related codes cover spectacles and contact lenses (Z46.0), hearing aid (Z46.1), dental prosthetic device (Z46.3), orthodontic device (Z46.4), other gastrointestinal appliance and device (Z46.5), urinary device (Z46.6), other specified devices (Z46.8) and unspecified device (Z46.9).

The conditions in its Excludes2 note aren't part of Z46.2, but may be coded alongside it if the patient has both: encounter for adjustment and management of implanted nervous system device (Z45.4-) and encounter for adjustment and management of implanted visual substitution device (Z45.31).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as V53.09 (fitting and adjustment of other devices related to nervous system and special senses).

Coding notes

Excludes2Not included here — may be reported together if both conditions exist
  • encounter for adjustment and management of implanted nervous system device (Z45.4-)
  • encounter for adjustment and management of implanted visual substitution device (Z45.31)

Notes that apply from higher levels

Instructions written at a parent level also apply to Z46.2.

› From Z46 Encounter for fitting and adjustment of other devices
Includes
  • removal or replacement of other device
Excludes1
  • malfunction or other complications of device - see Alphabetical Index
Excludes2
  • encounter for fitting and management of implanted devices (Z45.-)
  • issue of repeat prescription only (Z76.0)
  • presence of prosthetic and other devices (Z95-Z97)

Broader instructions also apply from Z40-Z53 Encounters for other specific health care and Chapter 21: Factors influencing health status and contact with health services.

Alphabetic index entries

30 entries

Terms in the official ICD-10-CM index that lead to Z46.2.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • V53.09Fitting and adjustment of other devices related to nervous system and special sensesapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Z46.2

Is Z46.2 billable?

Yes. Z46.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Z46.2 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Z46.2 as a principal diagnosis.

Is Z46.2 a CC or MCC?

No. Z46.2 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does Z46.2 group to?

Z46.2 is used in the MS-DRG v44.0 logic for MS-DRG 091 (Other Disorders of Nervous System with MCC), MS-DRG 092 (Other Disorders of Nervous System with CC) and MS-DRG 093 (Other Disorders of Nervous System without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for Z46.2?

The CMS General Equivalence Mappings map Z46.2 to ICD-9-CM V53.09.