K55.9 – Vascular disorder of intestine, unspecified

ICD-10-CM 2027 diagnosis code · Other diseases of intestines

Billable code

ICD-10-CM code K55.9

Code: K55.9 (claims format: K559)
Description: Vascular disorder of intestine, unspecified
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 11. Diseases of the digestive system (K00-K95)
Block: K55-K64 Other diseases of intestines
Parent codes: K55

Notes for K55.9

Applicable to:

Ischemic colitis
Ischemic enteritis
Ischemic enterocolitis

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

K55 – Vascular disorders of intestine

Excludes1 (not coded here):

necrotizing enterocolitis of newborn (P77.-)

Excludes2 (not included here):

angioectasia (angiodysplasia) duodenum (K31.81-)

Index terms for K55.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in K55

K55.0 – Acute vascular disorders of intestineHeader
K55.1 – Chronic vascular disorders of intestineBillable
K55.2 – Angiodysplasia of colonHeader
K55.3 – Necrotizing enterocolitisHeader
K55.8 – Other vascular disorders of intestineBillable

Frequently asked questions

What is ICD-10 code K55.9?

K55.9 is the ICD-10-CM code for vascular disorder of intestine, unspecified, in the block K55-K64 (Other diseases of intestines).

Is K55.9 a billable code?

Yes. K55.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K55.9 belong to?

It belongs to category K55 – Vascular disorders of intestine.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.