U.S. ICD-10-CM · FY 2027

I28 ICD-10-CM Code: Other diseases of pulmonary vessels

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

Code definition

Official description

I28

Other diseases of pulmonary vessels

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

Classification

Where I28 sits

  1. 1

    Chapter 9

    Diseases of the circulatory system (I00-I99)

  2. 2

    Section

    Pulmonary heart disease and diseases of pulmonary circulation (I26-I28)

  3. 3

    Category I28

    Other diseases of pulmonary vessels

  4. 4

    Code I28

    Other diseases of pulmonary vessels

More specific choices

Codes under I28

I28 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 I28.

Code first

No “code first” instruction is listed for I28.

Use additional code

No “use additional code” instruction is listed for I28.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for I28.

Excludes2

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

No Excludes2 note is listed for I28.

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 I28 mean?

I28 is the FY 2027 U.S. ICD-10-CM code for “Other diseases of pulmonary vessels.”

Is I28 a billable or specific ICD-10-CM code?

No. I28 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 I28 located in ICD-10-CM?

I28 is listed in Chapter 9, Diseases of the circulatory system (I00-I99), within Pulmonary heart disease and diseases of pulmonary circulation (I26-I28) (I26–I28), under category I28, Other diseases of pulmonary vessels.

What coding notes are listed for I28?

No inclusion terms are listed for I28 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

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