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ICD-10-CM 2027 diagnosis code

Z01.81Encounter for preprocedural examinations

Not billable — use a more specific code

Z01.81 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data

About Z01.81

Z01.81 is the ICD-10-CM diagnosis code for encounter for preprocedural examinations. 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 a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within Z01.8 (encounter for other specified special examinations), Z01.81 is specifically for encounter for preprocedural examinations. Related codes cover allergy testing (Z01.82), blood typing (Z01.83), antibody response examination (Z01.84) and other specified special examinations (Z01.89).

To report this condition, pick the subcode that matches the documentation: Z01.810 (examination), Z01.811 (examination), Z01.812 (examination) and Z01.818 (examination).

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 Z01.81

Coding notes

Applicable toConditions and synonyms classified to this code
  • Encounter for preoperative examinations
  • Encounter for radiological and imaging examinations as part of preprocedural examination

Notes that apply from higher levels

Instructions written at a parent level also apply to Z01.81.

› 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.

Codes whose notes reference Z01.81

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 Z01.81

Is Z01.81 billable?

No. Z01.81 is a header code. Report one of its more specific subcodes instead.