K51
Non-billableUlcerative colitis
Ulcerative colitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- noninfective inflammatory bowel disease
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- 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)
Child Codes (7)
Also Known As / Clinical Terms
UMLS
- Colitis GravisC0009324
- Colitis gravisC0009324
- Colitis ulcerativeC0009324
- Colitis ulcerosaC0009324
- Colitis, UlcerativeC0009324
- Idiopathic ProctocolitisC0009324
- Idiopathic proctocolitisC0009324
- Inflammatory Bowel Disease, Ulcerative Colitis TypeC0009324
- Inflammatory bowel disease, ulcerative colitis typeC0009324
- Proctocolitis, idiopathicC0009324
- UC - ulcerative colitisC0009324
- ULCERATIVE COLITISC0009324
- Ulcerative ColitisC0009324
- Ulcerative colitisC0009324
- Ulcerative colitis (disorder)C0009324
- Ulcerative colitis, unspecifiedC0009324
- colitis ulcerativeC0009324
- ulcerative colitisC0009324
Frequently Asked Questions
What is ICD-10 code K51?
ICD-10-CM code K51 represents "Ulcerative colitis". It is a non-billable header code — use a more specific child code for billing purposes.
Is K51 a billable code?
No, K51 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 7 child codes under K51.
What chapter is K51 in?
K51 is in Chapter 11: Diseases of the Digestive System (codes K00-K95).
What codes cannot be used with K51?
K51 has Excludes1 notes indicating codes that cannot be used together with it, including: irritable bowel syndrome (K58.-); megacolon (K59.3-); Crohn's disease [regional enteritis] (K50.-).
What are the subcategories under K51?
K51 has 7 child codes, including: K51.0 (Ulcerative (chronic) pancolitis), K51.2 (Ulcerative (chronic) proctitis), K51.3 (Ulcerative (chronic) rectosigmoiditis), K51.4 (Inflammatory polyps of colon), and 3 more.
Are additional codes required with K51?
Yes, when using K51 you should also code: code to identify any associated fistulas, if applicable:; anal fistula (K60.3-); anorectal fistula (K60.5-); rectal fistula (K60.4-).
What are the UMLS CUIs for K51?
K51 is linked to 1 UMLS Concept Unique Identifier: C0009324. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.