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ICD-10-CM Codes
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K00-K95
Diseases of the digestive system
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K50-K52
Noninfective enteritis and colitis
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K51-
Ulcerative colitis
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2021 ICD-10-CM Diagnosis Code K51.91
2021 ICD-10-CM Diagnosis Code K51.91
Ulcerative colitis, unspecified, with complications
2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
- K51.91 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
- The 2021 edition of ICD-10-CM K51.91 became effective on October 1, 2020.
- This is the American ICD-10-CM version of K51.91 - other international versions of ICD-10 K51.91 may differ.
The following code(s) above
K51.91 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
K51.91:
- K00-K95
2021 ICD-10-CM Range K00-K95
Diseases of the digestive systemType 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)
- K50-K52
2021 ICD-10-CM Range K50-K52
Noninfective enteritis and colitisIncludes- noninfective inflammatory bowel disease
- 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)
- 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
ICD-10-CM Codes Adjacent To K51.91
K51.80 …… without complications
K51.81 Other ulcerative colitis with complications
K51.811 Other ulcerative colitis with rectal bleeding
K51.812 Other ulcerative colitis with intestinal obstruction
K51.813 Other ulcerative colitis with fistula
K51.814 Other ulcerative colitis with abscess
K51.818 Other ulcerative colitis with other complication
K51.819 Other ulcerative colitis with unspecified complications
K51.9 Ulcerative colitis, unspecified
K51.90 …… without complications
K51.91
Ulcerative colitis, unspecified, with complications
K51.911 Ulcerative colitis, unspecified with rectal bleeding
K51.912 Ulcerative colitis, unspecified with intestinal obstruction
K51.913 Ulcerative colitis, unspecified with fistula
K51.914 Ulcerative colitis, unspecified with abscess
K51.918 Ulcerative colitis, unspecified with other complication
K51.919 Ulcerative colitis, unspecified with unspecified complications
K52 Other and unspecified noninfective gastroenteritis and colitis
K52.0 Gastroenteritis and colitis due to radiation
K52.1 Toxic gastroenteritis and colitis
K52.2 Allergic and dietetic gastroenteritis and colitis
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
