1. K64 Hemorrhoids and perianal venous thrombosis

    Includes:

    • piles

    Excludes1

    • hemorrhoids complicating childbirth and the puerperium (O87.2)
    • hemorrhoids complicating pregnancy (O22.4)
    1. K64.0 First degree hemorrhoids

      Inclusion term(s):

      • Grade/stage I hemorrhoids
      • Hemorrhoids (bleeding) without prolapse outside of anal canal
    2. K64.1 Second degree hemorrhoids

      Inclusion term(s):

      • Grade/stage II hemorrhoids
      • Hemorrhoids (bleeding) that prolapse with straining, but retract spontaneously
    3. K64.2 Third degree hemorrhoids

      Inclusion term(s):

      • Grade/stage III hemorrhoids
      • Hemorrhoids (bleeding) that prolapse with straining and require manual replacement back inside anal canal
    4. K64.3 Fourth degree hemorrhoids

      Inclusion term(s):

      • Grade/stage IV hemorrhoids
      • Hemorrhoids (bleeding) with prolapsed tissue that cannot be manually replaced
    5. K64.4 Residual hemorrhoidal skin tags

      Inclusion term(s):

      • External hemorrhoids, NOS
      • Skin tags of anus
    6. K64.5 Perianal venous thrombosis

      Inclusion term(s):

      • External hemorrhoids with thrombosis
      • Perianal hematoma
      • Thrombosed hemorrhoids NOS
    7. K64.8 Other hemorrhoids

      Inclusion term(s):

      • Internal hemorrhoids, without mention of degree
      • Prolapsed hemorrhoids, degree not specified
    8. K64.9 Unspecified hemorrhoids

      Inclusion term(s):

      • Hemorrhoids (bleeding) NOS
      • Hemorrhoids (bleeding) without mention of degree
Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.