U.S. ICD-10-CM · FY 2027

N27 ICD-10-CM Code: Small kidney of unknown cause

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

N27

Small kidney of unknown cause

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where N27 sits

  1. 1

    Chapter 14

    Diseases of the genitourinary system (N00-N99)

  2. 2

    Section

    Other disorders of kidney and ureter (N25-N29)

  3. 3

    Category N27

    Small kidney of unknown cause

  4. 4

    Code N27

    Small kidney of unknown cause

More specific choices

Codes under N27

N27 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for N27.

Code first

No “code first” instruction is listed for N27.

Use additional code

No “use additional code” instruction is listed for N27.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for N27.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for N27.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code N27 mean?

N27 is the FY 2027 U.S. ICD-10-CM code for “Small kidney of unknown cause.”

Is N27 a billable or specific ICD-10-CM code?

No. N27 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is N27 located in ICD-10-CM?

N27 is listed in Chapter 14, Diseases of the genitourinary system (N00-N99), within Other disorders of kidney and ureter (N25-N29) (N25–N29), under category N27, Small kidney of unknown cause.

What coding notes are listed for N27?

No inclusion terms are listed for N27 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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