2020 ICD-10-CM Diagnosis Code K51.4

Inflammatory polyps of colon

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • K51.4 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM K51.4 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K51.4 - other international versions of ICD-10 K51.4 may differ.
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K51.4. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • adenomatous polyp of colon (
    ICD-10-CM Diagnosis Code D12.6

    Benign neoplasm of colon, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Adenomatosis of colon
    • Benign neoplasm of large intestine NOS
    • Polyposis (hereditary) of colon
    Type 1 Excludes
    • inflammatory polyp of colon (K51.4-)
    D12.6
    )
  • polyposis of colon (
    ICD-10-CM Diagnosis Code D12.6

    Benign neoplasm of colon, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Adenomatosis of colon
    • Benign neoplasm of large intestine NOS
    • Polyposis (hereditary) of colon
    Type 1 Excludes
    • inflammatory polyp of colon (K51.4-)
    D12.6
    )
  • polyps of colon NOS (
    ICD-10-CM Diagnosis Code K63.5

    Polyp of colon

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • adenomatous polyp of colon (D12.-)
    • inflammatory polyp of colon (K51.4-)
    • polyposis of colon (D12.6)
    K63.5
    )
The following code(s) above K51.4 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K51.4:
  • K00-K95
    2020 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
  • K50-K52
    2020 ICD-10-CM Range K50-K52

    Noninfective enteritis and colitis

    Includes
    • noninfective inflammatory bowel disease
    Type 1 Excludes
    Noninfective enteritis and colitis
  • K51
    ICD-10-CM Diagnosis Code K51

    Ulcerative colitis

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • Crohn's disease [regional enteritis] (K50.-)
    Use Additional
    • code to identify manifestations, such as:
    • pyoderma gangrenosum (L88)
    Ulcerative colitis
Clinical Information
  • A non-neoplastic polypoid lesion in the colon. It may arise in a background of inflammatory bowel disease or colitis. It is characterized by the presence of a distorted epithelium, inflammation, and fibrosis.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to K51.4:
  • Type 1 Excludes: D12.6
    , K63.5
    ICD-10-CM Diagnosis Code D12.6

    Benign neoplasm of colon, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Adenomatosis of colon
    • Benign neoplasm of large intestine NOS
    • Polyposis (hereditary) of colon
    Type 1 Excludes
    • inflammatory polyp of colon (K51.4-)
    ICD-10-CM Diagnosis Code K63.5

    Polyp of colon

      2016 2017 2018 2019 2020 Billable/Specific Code
    Type 1 Excludes
    • adenomatous polyp of colon (D12.-)
    • inflammatory polyp of colon (K51.4-)
    • polyposis of colon (D12.6)
ICD-10-CM Codes Adjacent To K51.4
K51.219 Ulcerative (chronic) proctitis with unspecified complications
K51.3 Ulcerative (chronic) rectosigmoiditis
K51.30 …… without complications
K51.31 Ulcerative (chronic) rectosigmoiditis with complications
K51.311 Ulcerative (chronic) rectosigmoiditis with rectal bleeding
K51.312 Ulcerative (chronic) rectosigmoiditis with intestinal obstruction
K51.313 Ulcerative (chronic) rectosigmoiditis with fistula
K51.314 Ulcerative (chronic) rectosigmoiditis with abscess
K51.318 Ulcerative (chronic) rectosigmoiditis with other complication
K51.319 Ulcerative (chronic) rectosigmoiditis with unspecified complications
K51.4 Inflammatory polyps of colon
K51.40 …… without complications
K51.41 Inflammatory polyps of colon with complications
K51.411 Inflammatory polyps of colon with rectal bleeding
K51.412 Inflammatory polyps of colon with intestinal obstruction
K51.413 Inflammatory polyps of colon with fistula
K51.414 Inflammatory polyps of colon with abscess
K51.418 Inflammatory polyps of colon with other complication
K51.419 Inflammatory polyps of colon with unspecified complications
K51.5 Left sided colitis
K51.50 …… without complications

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.