K55.21 – Angiodysplasia of colon with hemorrhage
ICD-10-CM 2027 diagnosis code · Other diseases of intestines
ICD-10-CM code
K55.21
- Code
K55.21(claims format:K5521)- Description
- Angiodysplasia of colon with hemorrhage
- 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 › K55.2
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 K55.21
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in K55.2
Frequently asked questions
What is ICD-10 code K55.21?
K55.21 is the ICD-10-CM code for angiodysplasia of colon with hemorrhage, in the block K55-K64 (Other diseases of intestines).
Is K55.21 a billable code?
Yes. K55.21 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does K55.21 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.