Skip to main content

M95.12 vs Z89

M95.12 (Cauliflower ear, left ear) compared with Z89 (Acquired absence of limb), from the official CMS tabular data.

Summary

These codes can be reported together when both conditions are documented, because M95.12 lists Z89 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named, billing status and chapter.M95.12 is “Cauliflower ear, left ear”; Z89 is “Acquired absence of limb”. Z89 is a non-billable header; M95.12 is billable. M95.12 sits in M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99); Z89 in Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Registry fact

Can these codes be reported together?

Yes, when both are documented.M95.12 lists Z89 under Excludes2: “acquired absence of limbs and organs (Z89-Z90)”. 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. Z89 carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

Yes.M95.12’s tabular entry: “acquired absence of limbs and organs (Z89-Z90)”. The note covers Z89.

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?

One is a header.Z89 is a non-billable header, but M95.12 is not one of its subdivisions.

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

M95.12
Cauliflower ear, left ear
↔
Z89
Acquired absence of limb

What we found

Yes, when both are documented.M95.12 carries an Excludes2 note covering Z89: “acquired absence of limbs and organs (Z89-Z90)”

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

M95.12Cauliflower ear, left earZ89Acquired absence of limb
Billing statusBillableNon-billable header

Report instead: Z89.011, Z89.012, Z89.019, Z89.021, Z89.022

ClassificationM00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
DefinitionCauliflower ear, left ear is a billable ICD-10-CM diagnosis code (M95.12).Acquired absence of limb is a non-billable ICD-10-CM category code (Z89).
Includes—
amputation status
postprocedural loss of limb
post-traumatic loss of limb
Excludes1—
acquired deformities of limbs (M20-M21)
congenital absence of limbs (Q71-Q73)
Excludes2
other acquired deformities of ear (H61.1)
acquired absence of limbs and organs (Z89-Z90)
acquired deformities of limbs (M20-M21)
congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
deforming dorsopathies (M40-M43)
dentofacial anomalies [including malocclusion] (M26.-)
postprocedural musculoskeletal disorders (M96.-)
—
Code also—
any follow-up examination (Z08-Z09)

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.

Edit this comparisonCheck a whole claim

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