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Z08 vs Z40.81

Z08 (Encounter for follow-up examination after completed treatment for malignant neoplasm) compared with Z40.81 (Encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors), from the official CMS tabular data.

Summary

These codes can be reported together when both conditions are documented, because Z40.81 lists Z08 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

Title wording.The titles share “Encounter for”; Z08 says “follow-up examination after completed treatment for malignant neoplasm” where Z40.81 says “prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors”.

Registry fact

Can these codes be reported together?

Yes, when both are documented.Z40.81 lists Z08 under Excludes2: “follow-up examination for medical surveillance after treatment (Z08-Z09)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. Z08 carries 1 Excludes1 note and Z40.81 carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

Yes.Z40.81’s tabular entry: “follow-up examination for medical surveillance after treatment (Z08-Z09)”. The note covers Z08.

Official ruleGuide: Excludes1 vs Excludes2

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

No.Both are billable codes, and neither contains the other.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

Z40.81
Encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors
↔
Z08
Encounter for follow-up examination after completed treatment for malignant neoplasm

What we found

Yes, when both are documented.Z40.81 carries an Excludes2 note covering Z08: “follow-up examination for medical surveillance after treatment (Z08-Z09)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2026

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

Z08Encounter for follow-up examination after completed treatment for malignant neoplasmZ40.81Encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors
Billing statusBillableBillable
ClassificationZ00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
DefinitionEncounter for follow-up examination after completed treatment for malignant neoplasm is a billable ICD-10-CM diagnosis code (Z08).Encounter for prophylactic surgery for removal of ovary(s) for persons without known genetic/familial risk factors is a billable ICD-10-CM diagnosis code (Z40.81).
Includes
Medical surveillance following completed treatment
Encounter for prophylactic oophorectomy for persons without known genetic/ familial risk factors
Excludes1
aftercare following medical care (Z43-Z49, Z51)
organ donations (Z52.-)
therapeutic organ removal-code to condition
Excludes2
examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)
follow-up examination for medical surveillance after treatment (Z08-Z09)
Use additional code
code to identify any acquired absence of organs (Z90.-)
code to identify the personal history of malignant neoplasm (Z85.-)
—

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources