ICD-10-CM Code Z40.9

Encounter for prophylactic surgery, unspecified

Version 2020 Billable Code Unacceptable Principal Diagnosis

Valid for Submission

Z40.9 is a billable code used to specify a medical diagnosis of encounter for prophylactic surgery, unspecified. The code is valid for the year 2020 for the submission of HIPAA-covered transactions.

The code Z40.9 describes a circumstance which influences the patient's health status but not a current illness or injury. The code is unacceptable as a principal diagnosis.

ICD-10:Z40.9
Short Description:Encounter for prophylactic surgery, unspecified
Long Description:Encounter for prophylactic surgery, unspecified

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code Z40.9 are found in the index:


Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

  • Unacceptable principal diagnosis - There are selected codes that describe a circumstance which influences an individual’s health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Convert Z40.9 to ICD-9

  • V50.8 - Elective surgery NEC (Approximate Flag)

Code Classification

  • Factors influencing health status and contact with health services (Z00–Z99)
    • Encounters for other specific health care (Z40-Z53)
      • Encounter for prophylactic surgery (Z40)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020