U.S. ICD-10-CM · FY 2027

B25 ICD-10-CM Code: Cytomegaloviral disease

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

Code definition

Official description

B25

Cytomegaloviral disease

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

Classification

Where B25 sits

  1. 1

    Chapter 1

    Certain infectious and parasitic diseases (A00-B99)

  2. 2

    Section

    Other viral diseases (B25-B34)

  3. 3

    Category B25

    Cytomegaloviral disease

  4. 4

    Code B25

    Cytomegaloviral disease

More specific choices

Codes under B25

B25 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 B25.

Code first

No “code first” instruction is listed for B25.

Use additional code

No “use additional code” instruction is listed for B25.

Excludes1

Conditions that should not be reported together with this code.

  • congenital cytomegalovirus infection (P35.1)
  • cytomegaloviral mononucleosis (B27.1-)

Excludes2

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

No Excludes2 note is listed for B25.

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 B25 mean?

B25 is the FY 2027 U.S. ICD-10-CM code for “Cytomegaloviral disease.”

Is B25 a billable or specific ICD-10-CM code?

No. B25 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 B25 located in ICD-10-CM?

B25 is listed in Chapter 1, Certain infectious and parasitic diseases (A00-B99), within Other viral diseases (B25-B34) (B25–B34), under category B25, Cytomegaloviral disease.

What coding notes are listed for B25?

No inclusion terms are listed for B25 in this reference record. No code-first instruction is listed. Excludes1 notes: congenital cytomegalovirus infection (P35.1); cytomegaloviral mononucleosis (B27.1-). No Excludes2 note is listed.

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