ICD-10-CM 2027 diagnosis code

Z49.3Encounter for adequacy testing for dialysis

Not billable — use a more specific code

Z49.3 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.

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 Z49.3

Z49.3 is the ICD-10-CM diagnosis code for encounter for adequacy testing for dialysis. It belongs to category Z49 (encounter for care involving renal dialysis), block Z40-Z53 (Encounters for other specific health care) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within Z49 (encounter for care involving renal dialysis), Z49.3 is specifically for encounter for adequacy testing for dialysis. Related codes cover Preparatory care for renal dialysis (Z49.0).

To report this condition, pick the subcode that matches the documentation: Z49.31 (hemodialysis) and Z49.32 (dialysis).

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

Specific codes under Z49.3

Notes that apply from higher levels

Instructions written at a parent level also apply to Z49.3.

› From Z49 Encounter for care involving renal dialysis

Code also

associated end stage renal disease (N18.6)

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.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about Z49.3

Is Z49.3 billable?: No. Z49.3 is a header code. Report one of its more specific subcodes instead.