U.S. ICD-10-CM · FY 2027

C71 ICD-10-CM Code: Malignant neoplasm of brain

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

Code definition

Official description

C71

Malignant neoplasm of brain

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

Classification

Where C71 sits

  1. 1

    Chapter 2

    Neoplasms (C00-D49)

  2. 2

    Section

    Malignant neoplasms of eye, brain and other parts of central nervous system (C69-C72)

  3. 3

    Category C71

    Malignant neoplasm of brain

  4. 4

    Code C71

    Malignant neoplasm of brain

More specific choices

Codes under C71

C71 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 C71.

Code first

No “code first” instruction is listed for C71.

Use additional code

No “use additional code” instruction is listed for C71.

Excludes1

Conditions that should not be reported together with this code.

  • malignant neoplasm of cranial nerves (C72.2-C72.5)
  • retrobulbar malignant neoplasm (C69.6-)

Excludes2

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

No Excludes2 note is listed for C71.

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 C71 mean?

C71 is the FY 2027 U.S. ICD-10-CM code for “Malignant neoplasm of brain.”

Is C71 a billable or specific ICD-10-CM code?

No. C71 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 C71 located in ICD-10-CM?

C71 is listed in Chapter 2, Neoplasms (C00-D49), within Malignant neoplasms of eye, brain and other parts of central nervous system (C69-C72) (C69–C72), under category C71, Malignant neoplasm of brain.

What coding notes are listed for C71?

No inclusion terms are listed for C71 in this reference record. No code-first instruction is listed. Excludes1 notes: malignant neoplasm of cranial nerves (C72.2-C72.5); retrobulbar malignant neoplasm (C69.6-). No Excludes2 note is listed.

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