K51.818
ICD-10-CMThis code signifies ulcerative colitis that does not fit into other specified categories, accompanied by a complication other than toxic megacolon, hemorrhage, or fistula. It represents a chronic inflammatory bowel disease affecting the colon, where the specific type of ulcerative colitis is not further defined, and a secondary health issue has arisen due to the condition.
Use this code when documentation specifies ulcerative colitis with a complication such as arthritis, erythema nodosum, pyoderma gangrenosum, or primary sclerosing cholangitis, and the type of ulcerative colitis is not explicitly stated as pancolitis, proctosigmoiditis, or left-sided. It is appropriate when the complication is clearly linked to the ulcerative colitis and is not one of the more specific complications with its own dedicated code.
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