All ICD10 Codes
Chapter 11

K00–K95: Diseases of the Digestive System

Diseases of the Digestive System diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)
All CodesBillable Only
Internal Codes
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  • K04.8|

    Radicular cyst

  • K04.9|

    Other and unspecified diseases of pulp and periapical tissues

  • K04.90|

    Unspecified diseases of pulp and periapical tissues

  • K04.99|

    Other diseases of pulp and periapical tissues

  • K05|

    Gingivitis and periodontal diseases

  • K05.0|

    Acute gingivitis

  • K05.00|

    Acute gingivitis, plaque induced

  • K05.01|

    Acute gingivitis, non-plaque induced

  • K05.1|

    Chronic gingivitis

  • K05.10|

    Chronic gingivitis, plaque induced

  • K05.11|

    Chronic gingivitis, non-plaque induced

  • K05.2|

    Aggressive periodontitis

  • K05.20|

    Aggressive periodontitis, unspecified

  • K05.21|

    Aggressive periodontitis, localized

  • K05.211|

    Aggressive periodontitis, localized, slight

  • K05.212|

    Aggressive periodontitis, localized, moderate

  • K05.213|

    Aggressive periodontitis, localized, severe

  • K05.219|

    Aggressive periodontitis, localized, unspecified severity

  • K05.22|

    Aggressive periodontitis, generalized

  • K05.221|

    Aggressive periodontitis, generalized, slight

  • K05.222|

    Aggressive periodontitis, generalized, moderate

  • K05.223|

    Aggressive periodontitis, generalized, severe

  • K05.229|

    Aggressive periodontitis, generalized, unspecified severity

  • K05.3|

    Chronic periodontitis

  • K05.30|

    Chronic periodontitis, unspecified

  • K05.31|

    Chronic periodontitis, localized

  • K05.311|

    Chronic periodontitis, localized, slight

  • K05.312|

    Chronic periodontitis, localized, moderate

  • K05.313|

    Chronic periodontitis, localized, severe

  • K05.319|

    Chronic periodontitis, localized, unspecified severity

  • K05.32|

    Chronic periodontitis, generalized

  • K05.321|

    Chronic periodontitis, generalized, slight

  • K05.322|

    Chronic periodontitis, generalized, moderate

  • K05.323|

    Chronic periodontitis, generalized, severe

  • K05.329|

    Chronic periodontitis, generalized, unspecified severity

  • K05.4|

    Periodontosis

  • K05.5|

    Other periodontal diseases

  • K05.6|

    Periodontal disease, unspecified

  • K06|

    Other disorders of gingiva and edentulous alveolar ridge

  • K06.0|

    Gingival recession

  • K06.01|

    Gingival recession, localized

  • K06.010|

    Localized gingival recession, unspecified

  • K06.011|

    Localized gingival recession, minimal

  • K06.012|

    Localized gingival recession, moderate

  • K06.013|

    Localized gingival recession, severe

  • K06.02|

    Gingival recession, generalized

  • K06.020|

    Generalized gingival recession, unspecified

  • K06.021|

    Generalized gingival recession, minimal

  • K06.022|

    Generalized gingival recession, moderate

  • K06.023|

    Generalized gingival recession, severe

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