2021

  1. ICD-10-CM Codes
    2. ›
  2. K00-K95 Diseases of the digestive system
    3. ›
  3. K50-K52 Noninfective enteritis and colitis
    4. ›
  4. K51- Ulcerative colitis
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code K51.30

2021 ICD-10-CM Diagnosis Code K51.30

Ulcerative (chronic) rectosigmoiditis without complications

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • K51.30 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM K51.30 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of K51.30 - other international versions of ICD-10 K51.30 may differ.
Applicable To
  • Ulcerative (chronic) rectosigmoiditis NOS
The following code(s) above K51.30 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 K51.30:
  • K00-K95
    2021 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
    2021 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 2021 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
Approximate Synonyms
  • Chronic ulcerative rectosigmoiditis
  • Proctocolitis
  • Ulcerative proctosigmoiditis
ICD-10-CM K51.30 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 385 Inflammatory bowel disease with mcc
  • 386 Inflammatory bowel disease with cc
  • 387 Inflammatory bowel disease without cc/mcc

Convert K51.30 to ICD-9-CM

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
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to K51.30:
  • Rectosigmoiditis K63.89
    ICD-10-CM Diagnosis Code K63.89

    Other specified diseases of intestine

      2016 2017 2018 2019 2020 2021 Billable/Specific Code

ICD-10-CM Codes Adjacent To K51.30
K51.2 Ulcerative (chronic) proctitis
K51.20 …… without complications
K51.21 Ulcerative (chronic) proctitis with complications
K51.211 Ulcerative (chronic) proctitis with rectal bleeding
K51.212 Ulcerative (chronic) proctitis with intestinal obstruction
K51.213 Ulcerative (chronic) proctitis with fistula
K51.214 Ulcerative (chronic) proctitis with abscess
K51.218 Ulcerative (chronic) proctitis with other complication
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

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

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