Diseases of the digestive system (K00-K95)
Excludes 2: certain conditions originating in the perinatal period (P04-P96)
Noninfective enteritis and colitis (K50-K52)
Includes: noninfective inflammatory bowel disease
Excludes 1: irritable bowel syndrome (K58.-)
K50 Crohn's disease [regional enteritis] [+]
Includes: granulomatous enteritis
Use additional code to identify manifestations, such as:
Use additional pyoderma gangrenosum (L88)
Excludes 1: ulcerative colitis (K51.-)
K50.0 Crohn's disease of small intestine [+]
Excludes 1: Crohn's disease of both small and large intestine (K50.8-)
K50.00 Crohn's disease of small intestine without complications
K50.01 Crohn's disease of small intestine with complications [+]
K50.011 Crohn's disease of small intestine with rectal bleeding
K50.012 Crohn's disease of small intestine with intestinal obstruction
K50.013 Crohn's disease of small intestine with fistula
K50.014 Crohn's disease of small intestine with abscess
K50.018 Crohn's disease of small intestine with other complication
K50.019 Crohn's disease of small intestine with unspecified complications
K50.1 Crohn's disease of large intestine [+]
Excludes 1: Crohn's disease of both small and large intestine (K50.8)
K50.10 Crohn's disease of large intestine without complications
K50.11 Crohn's disease of large intestine with complications [+]
K50.111 Crohn's disease of large intestine with rectal bleeding
K50.112 Crohn's disease of large intestine with intestinal obstruction
K50.113 Crohn's disease of large intestine with fistula
K50.114 Crohn's disease of large intestine with abscess
K50.118 Crohn's disease of large intestine with other complication
K50.119 Crohn's disease of large intestine with unspecified complications
K50.8 Crohn's disease of both small and large intestine [+]
K50.80 Crohn's disease of both small and large intestine without complications
K50.81 Crohn's disease of both small and large intestine with complications [+]
K50.811 Crohn's disease of both small and large intestine with rectal bleeding
K50.812 Crohn's disease of both small and large intestine with intestinal obstruction
K50.813 Crohn's disease of both small and large intestine with fistula
K50.814 Crohn's disease of both small and large intestine with abscess
K50.818 Crohn's disease of both small and large intestine with other complication
K50.819 Crohn's disease of both small and large intestine with unspecified complications
K50.9 Crohn's disease, unspecified [+]
K50.90 Crohn's disease, unspecified, without complications
K50.91 Crohn's disease, unspecified, with complications [+]
K50.911 Crohn's disease, unspecified, with rectal bleeding
K50.912 Crohn's disease, unspecified, with intestinal obstruction
K50.913 Crohn's disease, unspecified, with fistula
K50.914 Crohn's disease, unspecified, with abscess
K50.918 Crohn's disease, unspecified, with other complication
K50.919 Crohn's disease, unspecified, with unspecified complications
K51 Ulcerative colitis [+]
Use additional code to identify manifestations, such as:
Use additional pyoderma gangrenosum (L88)
Excludes 1: Crohn's disease [regional enteritis] (K50.-)
K51.0 Ulcerative (chronic) pancolitis [+]
K51.00 Ulcerative (chronic) pancolitis without complications
K51.01 Ulcerative (chronic) pancolitis with complications [+]
K51.011 Ulcerative (chronic) pancolitis with rectal bleeding
K51.012 Ulcerative (chronic) pancolitis with intestinal obstruction
K51.013 Ulcerative (chronic) pancolitis with fistula
K51.014 Ulcerative (chronic) pancolitis with abscess
K51.018 Ulcerative (chronic) pancolitis with other complication
K51.019 Ulcerative (chronic) pancolitis with unspecified complications
K51.2 Ulcerative (chronic) proctitis [+]
K51.20 Ulcerative (chronic) proctitis without complications
K51.21 Ulcerative (chronic) proctitis with complications [+]
K51.211 Ulcerative (chronic) proctitis with rectal bleeding
K51.212 Ulcerative (chronic) proctitis with intestinal obstruction
K51.213 Ulcerative (chronic) proctitis with fistula
K51.214 Ulcerative (chronic) proctitis with abscess
K51.218 Ulcerative (chronic) proctitis with other complication
K51.219 Ulcerative (chronic) proctitis with unspecified complications
K51.3 Ulcerative (chronic) rectosigmoiditis [+]
K51.30 Ulcerative (chronic) rectosigmoiditis without complications
K51.31 Ulcerative (chronic) rectosigmoiditis with complications [+]
K51.311 Ulcerative (chronic) rectosigmoiditis with rectal bleeding
K51.312 Ulcerative (chronic) rectosigmoiditis with intestinal obstruction
K51.313 Ulcerative (chronic) rectosigmoiditis with fistula
K51.314 Ulcerative (chronic) rectosigmoiditis with abscess
K51.318 Ulcerative (chronic) rectosigmoiditis with other complication
K51.319 Ulcerative (chronic) rectosigmoiditis with unspecified complications
K51.4 Inflammatory polyps of colon [+]
Excludes 2: adenomatous polyp of colon (D12.6)
K51.40 Inflammatory polyps of colon without complications
K51.41 Inflammatory polyps of colon with complications [+]
K51.411 Inflammatory polyps of colon with rectal bleeding
K51.412 Inflammatory polyps of colon with intestinal obstruction
K51.413 Inflammatory polyps of colon with fistula
K51.414 Inflammatory polyps of colon with abscess
K51.418 Inflammatory polyps of colon with other complication
K51.419 Inflammatory polyps of colon with unspecified complications
K51.5 Left sided colitis [+]
K51.50 Left sided colitis without complications
K51.51 Left sided colitis with complications [+]
K51.511 Left sided colitis with rectal bleeding
K51.512 Left sided colitis with intestinal obstruction
K51.513 Left sided colitis with fistula
K51.514 Left sided colitis with abscess
K51.518 Left sided colitis with other complication
K51.519 Left sided colitis with unspecified complications
K51.8 Other ulcerative colitis [+]
K51.80 Other ulcerative colitis 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 Ulcerative colitis, unspecified, 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
Code first (T51-T65) to identify toxic agent
Use additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
K52.2 Allergic and dietetic gastroenteritis and colitis [+]
Use additional code to identify type of food allergy (Z91.01-, Z91.02-)
Excludes 2: allergic eosinophilic colitis (K52.82)
K52.21 Food protein-induced enterocolitis syndrome
Use additional code for hypovolemic shock, if present (R57.1)
K52.22 Food protein-induced enteropathy
K52.29 Other allergic and dietetic gastroenteritis and colitis
K52.3 Indeterminate colitis
Excludes 1: unspecified colitis (K52.9)
K52.8 Other specified noninfective gastroenteritis and colitis [+]
K52.81 Eosinophilic gastritis or gastroenteritis
Excludes 2: eosinophilic esophagitis (K20.0)
K52.82 Eosinophilic colitis
Excludes 2: allergic proctocolitis (K52.29)
K52.83 Microscopic colitis [+]
K52.89 Other specified noninfective gastroenteritis and colitis
K52.9 Noninfective gastroenteritis and colitis, unspecified
Excludes 1: diarrhea NOS (R19.7)
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The Preventive Services information are collected while browsing through the Centers for Medicare & Medicaid Services (CMS) Websites.
The ICD-10 Diagnosis Codes are based on the latest diagnosis coding files (2021 ICD-10-CM and 2018 GEMs ).
The ICD-10 Procedure Codes are based on the latest procedure coding files (2021 ICD-10-PCS and 2018 GEMs ).