K55.30 ICD-10-CM Code: Necrotizing enterocolitis, unspecified

K55.30 is the billable ICD-10-CM code for “Necrotizing enterocolitis, unspecified” in the FY 2027 U.S. code set, effective Oct 1, 2026.

Official description

K55.30

Necrotizing enterocolitis, unspecified

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

More specific than K55.30

K55.30 is an unspecified code, for when the note doesn’t say more. If it documents the type, cause, or site, one of these codes may fit better.

Where K55.30 sits

  1. 1

    Chapter 11

    Diseases of the digestive system (K00-K95)

  2. 2

    Section

    Other diseases of intestines (K55-K64)

  3. 3

    Category K55

    Vascular disorders of intestine

  4. 4

    Subcategory K55.3

    Necrotizing enterocolitis

  5. 5

    Code K55.30

    Necrotizing enterocolitis, unspecified

Notes for this code

Inclusion terms

  • Necrotizing enterocolitis, NOS

Code first

No “code first” instruction is listed for K55.30.

Use additional code

No “use additional code” instruction is listed for K55.30.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for K55.30.

Excludes2

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

No Excludes2 note is listed for K55.30.

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.

Frequently asked questions

What does ICD-10-CM code K55.30 mean?

K55.30 is the FY 2027 U.S. ICD-10-CM code for “Necrotizing enterocolitis, unspecified.”

Is K55.30 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, K55.30 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is K55.30 located in ICD-10-CM?

K55.30 is listed in Chapter 11, Diseases of the digestive system (K00-K95), within Other diseases of intestines (K55-K64) (K55–K64), under category K55, Vascular disorders of intestine and subcategory K55.3, Necrotizing enterocolitis.

What coding notes are listed for K55.30?

Its listed inclusion terms are Necrotizing enterocolitis, NOS. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.