Index Terms Starting With 'C' (Colitis)

  • Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic) K52.9
    - see also Enteritis
    ICD-10-CM Diagnosis Code K52.9

    Noninfective gastroenteritis and colitis, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Colitis NOS
    • Enteritis NOS
    • Gastroenteritis NOS
    • Ileitis NOS
    • Jejunitis NOS
    • Sigmoiditis NOS
    Type 1 Excludes
    • diarrhea NOS (R19.7)
    • functional diarrhea (K59.1)
    • infectious gastroenteritis and colitis NOS (A09)
    • neonatal diarrhea (noninfective) (P78.3)
    • psychogenic diarrhea (F45.8)

    • allergic K52.29
      ICD-10-CM Diagnosis Code K52.29

      Other allergic and dietetic gastroenteritis and colitis

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Food hypersensitivity gastroenteritis or colitis
      • Immediate gastrointestinal hypersensitivity
      • with
        • food protein-induced enterocolitis syndrome K52.21
          ICD-10-CM Diagnosis Code K52.21

          Food protein-induced enterocolitis syndrome

            2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
          Applicable To
          • FPIES
          Use Additional
          • code for hypovolemic shock, if present (R57.1)
        • proctocolitis K52.82
          ICD-10-CM Diagnosis Code K52.82

          Eosinophilic colitis

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          Applicable To
          • Allergic proctocolitis
          • Food-induced eosinophilic proctocolitis
          • Food protein-induced proctocolitis
          • Milk protein-induced proctocolitis
    • amebic (acute) A06.0
      - see also Amebiasis
      ICD-10-CM Diagnosis Code A06.0

      Acute amebic dysentery

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Acute amebiasis
      • Intestinal amebiasis NOS
      • nondysenteric A06.2
        ICD-10-CM Diagnosis Code A06.2

        Amebic nondysenteric colitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • anthrax A22.2
      ICD-10-CM Diagnosis Code A22.2

      Gastrointestinal anthrax

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • bacillary - see Infection, Shigella
    • balantidial A07.0
      ICD-10-CM Diagnosis Code A07.0

      Balantidiasis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Balantidial dysentery
    • Clostridium difficile
      • not specified as recurrent A04.72
        ICD-10-CM Diagnosis Code A04.72

        Enterocolitis due to Clostridium difficile, not specified as recurrent

          2018 - New Code 2019 2020 2021 Billable/Specific Code
      • recurrent A04.71
        ICD-10-CM Diagnosis Code A04.71

        Enterocolitis due to Clostridium difficile, recurrent

          2018 - New Code 2019 2020 2021 Billable/Specific Code
    • coccidial A07.3
      ICD-10-CM Diagnosis Code A07.3

      Isosporiasis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Infection due to Isospora belli and Isospora hominis
      • Intestinal coccidiosis
      • Isosporosis
    • collagenous K52.831
      ICD-10-CM Diagnosis Code K52.831

      Collagenous colitis

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
    • cystica superficialis K52.89
      ICD-10-CM Diagnosis Code K52.89

      Other specified noninfective gastroenteritis and colitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • dietary counseling and surveillance Z71.3
      (for)
      ICD-10-CM Diagnosis Code Z71.3

      Dietary counseling and surveillance

        2016 2017 2018 2019 2020 2021 Billable/Specific Code POA Exempt
      Use Additional
      • code for any associated underlying medical condition
    • dietetic K52.29
      - see also Colitis, allergic
      ICD-10-CM Diagnosis Code K52.29

      Other allergic and dietetic gastroenteritis and colitis

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Food hypersensitivity gastroenteritis or colitis
      • Immediate gastrointestinal hypersensitivity
    • drug-induced K52.1
      ICD-10-CM Diagnosis Code K52.1

      Toxic gastroenteritis and colitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Drug-induced gastroenteritis and colitis
      Code First
      Use Additional
      • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    • due to radiation K52.0
      ICD-10-CM Diagnosis Code K52.0

      Gastroenteritis and colitis due to radiation

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • eosinophilic K52.82
      ICD-10-CM Diagnosis Code K52.82

      Eosinophilic colitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Allergic proctocolitis
      • Food-induced eosinophilic proctocolitis
      • Food protein-induced proctocolitis
      • Milk protein-induced proctocolitis
    • food hypersensitivity K52.29
      - see also Colitis, allergic
      ICD-10-CM Diagnosis Code K52.29

      Other allergic and dietetic gastroenteritis and colitis

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Food hypersensitivity gastroenteritis or colitis
      • Immediate gastrointestinal hypersensitivity
    • giardial A07.1
      ICD-10-CM Diagnosis Code A07.1

      Giardiasis [lambliasis]

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • granulomatous - see Enteritis, regional, large intestine
    • indeterminate, so stated K52.3
      ICD-10-CM Diagnosis Code K52.3

      Indeterminate colitis

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Colonic inflammatory bowel disease unclassified (IBDU)
      Type 1 Excludes
      • unspecified colitis (K52.9)
    • infectious - see Enteritis, infectious
    • ischemic K55.9
      ICD-10-CM Diagnosis Code K55.9

      Vascular disorder of intestine, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Ischemic colitis
      • Ischemic enteritis
      • Ischemic enterocolitis
      • acute K55.039
        (subacute) - see also Ischemia, intestine, acute
        ICD-10-CM Diagnosis Code K55.039

        Acute (reversible) ischemia of large intestine, extent unspecified

          2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
      • chronic K55.1
        ICD-10-CM Diagnosis Code K55.1

        Chronic vascular disorders of intestine

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Chronic ischemic colitis
        • Chronic ischemic enteritis
        • Chronic ischemic enterocolitis
        • Ischemic stricture of intestine
        • Mesenteric atherosclerosis
        • Mesenteric vascular insufficiency
      • due to mesenteric artery insufficiency K55.1
        ICD-10-CM Diagnosis Code K55.1

        Chronic vascular disorders of intestine

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Chronic ischemic colitis
        • Chronic ischemic enteritis
        • Chronic ischemic enterocolitis
        • Ischemic stricture of intestine
        • Mesenteric atherosclerosis
        • Mesenteric vascular insufficiency
      • fulminant K55.039
        (acute) - see also Ischemia, intestine, acute
        ICD-10-CM Diagnosis Code K55.039

        Acute (reversible) ischemia of large intestine, extent unspecified

          2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
    • left sided K51.50
      ICD-10-CM Diagnosis Code K51.50

      Left sided colitis without complications

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Left sided colitis NOS
      • with
        • abscess K51.514
          ICD-10-CM Diagnosis Code K51.514

          Left sided colitis with abscess

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
        • complication K51.519
          ICD-10-CM Diagnosis Code K51.519

          Left sided colitis with unspecified complications

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • specified NEC K51.518
            ICD-10-CM Diagnosis Code K51.518

            Left sided colitis with other complication

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
        • fistula K51.513
          ICD-10-CM Diagnosis Code K51.513

          Left sided colitis with fistula

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
        • obstruction K51.512
          ICD-10-CM Diagnosis Code K51.512

          Left sided colitis with intestinal obstruction

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
        • rectal bleeding K51.511
          ICD-10-CM Diagnosis Code K51.511

          Left sided colitis with rectal bleeding

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • lymphocytic K52.832
      ICD-10-CM Diagnosis Code K52.832

      Lymphocytic colitis

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
    • membranous
      • psychogenic F54
        ICD-10-CM Diagnosis Code F54

        Psychological and behavioral factors associated with disorders or diseases classified elsewhere

          2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
        Applicable To
        • Psychological factors affecting physical conditions
        Code First
        • the associated physical disorder, such as:
        • asthma (J45.-)
        • dermatitis (L23-L25)
        • gastric ulcer (K25.-)
        • mucous colitis (K58.-)
        • ulcerative colitis (K51.-)
        • urticaria (L50.-)
        Type 2 Excludes
        • tension-type headache (G44.2)
    • microscopic K52.839
      ICD-10-CM Diagnosis Code K52.839

      Microscopic colitis, unspecified

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
      • specified NEC K52.838
        ICD-10-CM Diagnosis Code K52.838

        Other microscopic colitis

          2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
    • mucous - see Syndrome, irritable, bowel
      • psychogenic F54
        ICD-10-CM Diagnosis Code F54

        Psychological and behavioral factors associated with disorders or diseases classified elsewhere

          2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
        Applicable To
        • Psychological factors affecting physical conditions
        Code First
        • the associated physical disorder, such as:
        • asthma (J45.-)
        • dermatitis (L23-L25)
        • gastric ulcer (K25.-)
        • mucous colitis (K58.-)
        • ulcerative colitis (K51.-)
        • urticaria (L50.-)
        Type 2 Excludes
        • tension-type headache (G44.2)
    • noninfective K52.9
      ICD-10-CM Diagnosis Code K52.9

      Noninfective gastroenteritis and colitis, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Colitis NOS
      • Enteritis NOS
      • Gastroenteritis NOS
      • Ileitis NOS
      • Jejunitis NOS
      • Sigmoiditis NOS
      Type 1 Excludes
      • diarrhea NOS (R19.7)
      • functional diarrhea (K59.1)
      • infectious gastroenteritis and colitis NOS (A09)
      • neonatal diarrhea (noninfective) (P78.3)
      • psychogenic diarrhea (F45.8)
      • specified NEC K52.89
        ICD-10-CM Diagnosis Code K52.89

        Other specified noninfective gastroenteritis and colitis

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • polyposa - see Polyp, colon, inflammatory
    • protozoal A07.9
      ICD-10-CM Diagnosis Code A07.9

      Protozoal intestinal disease, unspecified

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Flagellate diarrhea
      • Protozoal colitis
      • Protozoal diarrhea
      • Protozoal dysentery
    • pseudomembranous
      • not specified as recurrent A04.72
        ICD-10-CM Diagnosis Code A04.72

        Enterocolitis due to Clostridium difficile, not specified as recurrent

          2018 - New Code 2019 2020 2021 Billable/Specific Code
      • recurrent A04.71
        ICD-10-CM Diagnosis Code A04.71

        Enterocolitis due to Clostridium difficile, recurrent

          2018 - New Code 2019 2020 2021 Billable/Specific Code
    • pseudomucinous - see Syndrome, irritable, bowel
    • regional - see Enteritis, regional, large intestine
      • infectious A09
        ICD-10-CM Diagnosis Code A09

        Infectious gastroenteritis and colitis, unspecified

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        Applicable To
        • Infectious colitis NOS
        • Infectious enteritis NOS
        • Infectious gastroenteritis NOS
        Type 1 Excludes
        • colitis NOS (K52.9)
        • diarrhea NOS (R19.7)
        • enteritis NOS (K52.9)
        • gastroenteritis NOS (K52.9)
        • noninfective gastroenteritis and colitis, unspecified (K52.9)
    • segmental - see Enteritis, regional, large intestine
    • septic - see Enteritis, infectious
    • spastic K58.9
      ICD-10-CM Diagnosis Code K58.9

      Irritable bowel syndrome without diarrhea

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Irritable bowel syndrome NOS
      • psychogenic F54
        ICD-10-CM Diagnosis Code F54

        Psychological and behavioral factors associated with disorders or diseases classified elsewhere

          2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
        Applicable To
        • Psychological factors affecting physical conditions
        Code First
        • the associated physical disorder, such as:
        • asthma (J45.-)
        • dermatitis (L23-L25)
        • gastric ulcer (K25.-)
        • mucous colitis (K58.-)
        • ulcerative colitis (K51.-)
        • urticaria (L50.-)
        Type 2 Excludes
        • tension-type headache (G44.2)
      • with diarrhea K58.0
        ICD-10-CM Diagnosis Code K58.0

        Irritable bowel syndrome with diarrhea

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • staphylococcal A04.8
      ICD-10-CM Diagnosis Code A04.8

      Other specified bacterial intestinal infections

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • foodborne A05.0
        ICD-10-CM Diagnosis Code A05.0

        Foodborne staphylococcal intoxication

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
    • subacute ischemic K55.039
      - see also Ischemia, intestine, acute
      ICD-10-CM Diagnosis Code K55.039

      Acute (reversible) ischemia of large intestine, extent unspecified

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
    • thromboulcerative K55.039
      - see also Ischemia, intestine, acute
      ICD-10-CM Diagnosis Code K55.039

      Acute (reversible) ischemia of large intestine, extent unspecified

        2017 - New Code 2018 2019 2020 2021 Billable/Specific Code
    • toxic NEC K52.1
      ICD-10-CM Diagnosis Code K52.1

      Toxic gastroenteritis and colitis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Drug-induced gastroenteritis and colitis
      Code First
      Use Additional
      • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
      • due to Clostridium difficile
        • not specified as recurrent A04.72
          ICD-10-CM Diagnosis Code A04.72

          Enterocolitis due to Clostridium difficile, not specified as recurrent

            2018 - New Code 2019 2020 2021 Billable/Specific Code
        • recurrent A04.71
          ICD-10-CM Diagnosis Code A04.71

          Enterocolitis due to Clostridium difficile, recurrent

            2018 - New Code 2019 2020 2021 Billable/Specific Code
    • transmural - see Enteritis, regional, large intestine
    • trichomonal A07.8
      ICD-10-CM Diagnosis Code A07.8

      Other specified protozoal intestinal diseases

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Intestinal microsporidiosis
      • Intestinal trichomoniasis
      • Sarcocystosis
      • Sarcosporidiosis
    • tuberculous A18.32
      (ulcerative)
      ICD-10-CM Diagnosis Code A18.32

      Tuberculous enteritis

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      Applicable To
      • Tuberculosis of anus and rectum
      • Tuberculosis of intestine (large) (small)
    • ulcerative (chronic) K51.90
      ICD-10-CM Diagnosis Code K51.90

      Ulcerative colitis, unspecified, without complications

        2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • enterocolitis - see Enterocolitis, ulcerative
      • ileocolitis - see Ileocolitis, ulcerative
      • mucosal proctocolitis - see Proctocolitis, mucosal
      • proctitis - see Proctitis, ulcerative
      • pseudopolyposis - see Polyp, colon, inflammatory
      • psychogenic F54
        ICD-10-CM Diagnosis Code F54

        Psychological and behavioral factors associated with disorders or diseases classified elsewhere

          2016 2017 2018 2019 2020 2021 Billable/Specific Code Manifestation Code
        Applicable To
        • Psychological factors affecting physical conditions
        Code First
        • the associated physical disorder, such as:
        • asthma (J45.-)
        • dermatitis (L23-L25)
        • gastric ulcer (K25.-)
        • mucous colitis (K58.-)
        • ulcerative colitis (K51.-)
        • urticaria (L50.-)
        Type 2 Excludes
        • tension-type headache (G44.2)
      • rectosigmoiditis - see Rectosigmoiditis, ulcerative
      • specified type NEC K51.80
        ICD-10-CM Diagnosis Code K51.80

        Other ulcerative colitis without complications

          2016 2017 2018 2019 2020 2021 Billable/Specific Code
        • with
          • complication K51.819
            ICD-10-CM Diagnosis Code K51.819

            Other ulcerative colitis with unspecified complications

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
            • abscess K51.814
              ICD-10-CM Diagnosis Code K51.814

              Other ulcerative colitis with abscess

                2016 2017 2018 2019 2020 2021 Billable/Specific Code
            • fistula K51.813
              ICD-10-CM Diagnosis Code K51.813

              Other ulcerative colitis with fistula

                2016 2017 2018 2019 2020 2021 Billable/Specific Code
            • obstruction K51.812
              ICD-10-CM Diagnosis Code K51.812

              Other ulcerative colitis with intestinal obstruction

                2016 2017 2018 2019 2020 2021 Billable/Specific Code
            • rectal bleeding K51.811
              ICD-10-CM Diagnosis Code K51.811

              Other ulcerative colitis with rectal bleeding

                2016 2017 2018 2019 2020 2021 Billable/Specific Code
            • specified complication NEC K51.818
              ICD-10-CM Diagnosis Code K51.818

              Other ulcerative colitis with other complication

                2016 2017 2018 2019 2020 2021 Billable/Specific Code
      • with
        • complication K51.919
          ICD-10-CM Diagnosis Code K51.919

          Ulcerative colitis, unspecified with unspecified complications

            2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • abscess K51.914
            ICD-10-CM Diagnosis Code K51.914

            Ulcerative colitis, unspecified with abscess

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • fistula K51.913
            ICD-10-CM Diagnosis Code K51.913

            Ulcerative colitis, unspecified with fistula

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • obstruction K51.912
            ICD-10-CM Diagnosis Code K51.912

            Ulcerative colitis, unspecified with intestinal obstruction

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • rectal bleeding K51.911
            ICD-10-CM Diagnosis Code K51.911

            Ulcerative colitis, unspecified with rectal bleeding

              2016 2017 2018 2019 2020 2021 Billable/Specific Code
          • specified complication NEC K51.918
            ICD-10-CM Diagnosis Code K51.918

            Ulcerative colitis, unspecified with other complication

              2016 2017 2018 2019 2020 2021 Billable/Specific Code