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  1. B
    Code: K50.913
    Crohn's disease, unspecified, with fistula
    Parent Code Notes: K50
    Excludes1: ulcerative colitis (K51.-)
    Includes: granulomatous enteritis
    Use additional code to identify manifestations, such as:
    pyoderma gangrenosum (L88)

    Category Notes
    Noninfective enteritis and colitis (K50-K52)
    Includes: noninfective inflammatory bowel disease
    Excludes 1: irritable bowel syndrome (K58.-)
    megacolon (K59.3-)

    Coding Guidelines
    Diseases of the digestive system (K00-K95)
    Excludes 2: 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)