ICD-9-CM Codes ICD-9-PCS Codes

556.9 - Ulcerative colitis, unspecified

GEM Conversion to ICD-10 CM

K51.90

Fs: 10000 – Ulcerative colitis, unspecified, without complications

K59.31

Fs: 10000 – Toxic megacolon

Sibling Codes

556.0

Ulcerative (chronic) enterocolitis

556.1

Ulcerative (chronic) ileocolitis

556.2

Ulcerative (chronic) proctitis

556.3

Ulcerative (chronic) proctosigmoiditis

556.4

Pseudopolyposis of colon

556.5

Left-sided ulcerative (chronic) colitis

556.6

Universal ulcerative (chronic) colitis

556.8

Other ulcerative colitis

556.9

Ulcerative colitis, unspecified