Hemorrhoids and perianal venous thrombosis (K64) ICD-10-CM
The K64 code range covers hemorrhoids and perianal venous thrombosis with 9 ICD-10-CM diagnosis codes. 8 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
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Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the K64 Range 9 codes · 8 billable
- K64 Hemorrhoids and perianal venous thrombosisNon-billable
- K64.0 First degree hemorrhoids
- K64.1 Second degree hemorrhoids
- K64.2 Third degree hemorrhoids
- K64.3 Fourth degree hemorrhoids
- K64.4 Residual hemorrhoidal skin tags
- K64.5 Perianal venous thrombosis
- K64.8 Other hemorrhoids
- K64.9 Unspecified hemorrhoids
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the K64 range.
Hemorrhoids
Swollen veins in the lower part of the RECTUM or ANUS. Hemorrhoids can be inside the anus (internal), under the skin around the anus (external), or protruding from inside to outside of the anus. People with hemorrhoids may or may not exhibit symptoms which include bleeding, itching, and pain.
About the K64 Code Range
The ICD-10 code section K64 covers hemorrhoids and perianal venous thrombosis, which are conditions involving swollen veins in and around the anus causing discomfort and bleeding. These codes are used to classify varying severity and types of hemorrhoids as well as related complications.
This code section includes detailed subcodes identifying the degree of internal hemorrhoids, from K64.0 (first degree, or mild bleeding internal hemorrhoids) to K64.3 (fourth degree, involving irreducible prolapsed and strangulated hemorrhoids). Terms like "bleeding internal hemorrhoids" and "prolapsed internal hemorrhoids" correspond directly to these codes, helping coders select the precise diagnosis. Additionally, K64.4 refers to residual hemorrhoidal skin tags, known as anal or sentinel tags, while K64.5 codes for perianal venous thrombosis, also called thrombosed external hemorrhoids. Other less common hemorrhoids are covered under K64.8, and unspecified hemorrhoids fall under K64.9. Understanding these subcodes ensures accurate coding for conditions such as bleeding, prolapse, thrombosis, or skin tags related to hemorrhoids.
Questions About This Page
How many billable codes are in the K64 range?
Of the 9 codes in this range, 8 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the K64 range classify?
The range classifies hemorrhoids and perianal venous thrombosis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
