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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