MCMedicalCodingSoftware
Z40.9

Z40.9: Encounter for prophylactic surgery, unspecified

Billable / specific codeICD-10-CM

Z40.9 is a billable, specific ICD-10-CM code for encounter for prophylactic surgery, unspecified. It is valid for submission on a claim.

Check Z40.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above Z40.9

A category’s note binds every code beneath it.

Written on Z40: Encounter for prophylactic surgery

  • organ donations (Z52.-)
  • therapeutic organ removal-code to condition

Other codes that can never be billed with Z40.9

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z29Encounter for other prophylactic measures

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

Z40.9 is named in 1 Medicare coverage policy: 0 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which one applies depends on your Medicare contractor.

  • A56658Billing and Coding: Cosmetic and Reconstructive Surgerynot covered

Alphabetic index entries that lead here

  • Prophylactic›surgery

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Z40

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.