K64.5 – Perianal venous thrombosis

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

Billable code

ICD-10-CM code K64.5

Code: K64.5 (claims format: K645)
Description: Perianal venous thrombosis
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: K64

Notes for K64.5

Applicable to:

External hemorrhoids with thrombosis
Perianal hematoma
Thrombosed hemorrhoids NOS

Notes inherited from parent codes

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

K64 – Hemorrhoids and perianal venous thrombosis

Includes:

piles

Excludes1 (not coded here):

hemorrhoids complicating childbirth and the puerperium (O87.2)
hemorrhoids complicating pregnancy (O22.4)

Index terms for K64.5

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

Related codes in K64

K64.0 – First degree hemorrhoidsBillable
K64.1 – Second degree hemorrhoidsBillable
K64.2 – Third degree hemorrhoidsBillable
K64.3 – Fourth degree hemorrhoidsBillable
K64.4 – Residual hemorrhoidal skin tagsBillable
K64.8 – Other hemorrhoidsBillable
K64.9 – Unspecified hemorrhoidsBillable

Frequently asked questions

What is ICD-10 code K64.5?

K64.5 is the ICD-10-CM code for perianal venous thrombosis, in the block K55-K64 (Other diseases of intestines).

Is K64.5 a billable code?

Yes. K64.5 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does K64.5 belong to?

It belongs to category K64 – Hemorrhoids and perianal venous thrombosis.

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.