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ICD-10-CM 2027 diagnosis code

Z01.021Encounter for examination of eyes and vision following failed vision screening with abnormal findings

✓ Billable / specificPOA exempt

Z01.021 is a valid, billable ICD-10-CM code for encounter for examination of eyes and vision following failed vision screening with abnormal findings. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Enctr for exam of eyes and vis fol fail vis scrn wbn find

Code last changed in FY2020 (effective October 1, 2019). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z01.021

Z01.021 is the ICD-10-CM diagnosis code for encounter for examination of eyes and vision following failed vision screening with abnormal findings. It belongs to category Z01 (encounter for other special examination without complaint, suspected or reported diagnosis), block Z00-Z13 (persons encountering health services for examinations) 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 Z01.02 (encounter for examination of eyes and vision following failed vision screening), Z01.021 is specifically for encounter for examination of eyes and vision following failed vision screening with abnormal findings. Related codes cover without abnormal findings (Z01.020).

Use an additional code to identify abnormal findings.

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 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), 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 was added in FY2020, effective October 1, 2019.

Coding notes

Use additional codeAdd a secondary code to fully describe the condition
  • code to identify abnormal findings

Notes that apply from higher levels

Instructions written at a parent level also apply to Z01.021.

› From Z01.02 Encounter for examination of eyes and vision following failed vision screening
Excludes1
  • encounter for examination of eyes and vision with abnormal findings (Z01.01)
  • encounter for examination of eyes and vision without abnormal findings (Z01.00)
› From Z01.0 Encounter for examination of eyes and vision
Excludes1
  • examination for driving license (Z02.4)
› From Z01 Encounter for other special examination without complaint, suspected or reported diagnosis
Note
  • Codes from category Z01 represent the reason for the encounter. A separate procedure code is required to identify any examinations or procedures performed
Includes
  • routine examination of specific system
Excludes1
  • encounter for examination for administrative purposes (Z02.-)
  • encounter for examination for suspected conditions, proven not to exist (Z03.-)
  • encounter for laboratory, radiologic and imaging examinations for sign(s) and symptom(s) - code to the sign(s) or symptom(s)
Excludes2
  • encounter for laboratory and radiologic examinations as a component of general medical examinations (Z00.0-)
  • screening examinations (Z11-Z13)

Broader instructions also apply from Z00-Z13 Persons encountering health services for examinations and Chapter 21: Factors influencing health status and contact with health services.

Alphabetic index entries

7 entries

Terms in the official ICD-10-CM index that lead to Z01.021.

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.

MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services

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
  • FY2020 (effective 10/1/2019): Added
  • No changes since FY2020.

Common questions about Z01.021

Is Z01.021 billable?

Yes. Z01.021 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Z01.021 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Z01.021 as a principal diagnosis.

Is Z01.021 a CC or MCC?

No. Z01.021 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does Z01.021 group to?

Z01.021 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.