{"code":"K04","type":"category","title":"Diseases of pulp and periapical tissues","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["K04.0","K04.1","K04.2","K04.3","K04.4","K04.5","K04.6","K04.7","K04.8","K04.9"],"inclusionTerms":[],"sibling_titles":{"code":"K04.9","title":"Other and unspecified diseases of pulp and periapical tissues","isBillable":false},"useAdditionalCode":[],"clinicalDefinition":"Diseases of pulp and periapical tissues is a non-billable ICD-10-CM category code (K04). A more specific billable subcode must be selected for claims submission.","officialDefinition":"Diseases of pulp and periapical tissues is a non-billable ICD-10-CM category code (K04). A more specific billable subcode must be selected for claims submission.","seventhCharacterInstructions":[],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[{"code":"K04.0","title":"Pulpitis","description":"Pulpitis is a non-billable ICD-10-CM category code (K04.0). A more specific billable subcode must be selected for claims submission. Inclusion terms: Acute pulpitis; Chronic (hyperplastic) (ulcerative) pulpitis.","isBillable":false,"slug":"k04.0-pulpitis"},{"code":"K04.01","title":"Reversible pulpitis","description":"Reversible pulpitis is a billable ICD-10-CM diagnosis code (K04.01).","isBillable":true,"slug":"k04.01-reversible-pulpitis"},{"code":"K04.02","title":"Irreversible pulpitis","description":"Irreversible pulpitis is a billable ICD-10-CM diagnosis code (K04.02).","isBillable":true,"slug":"k04.02-irreversible-pulpitis"},{"code":"K04.1","title":"Necrosis of pulp","description":"Necrosis of pulp is a billable ICD-10-CM diagnosis code (K04.1). Inclusion terms: Pulpal gangrene.","isBillable":true,"slug":"k04.1-necrosis-of-pulp"},{"code":"K04.2","title":"Pulp degeneration","description":"Pulp degeneration is a billable ICD-10-CM diagnosis code (K04.2). Inclusion terms: Denticles; Pulpal calcifications; Pulpal stones.","isBillable":true,"slug":"k04.2-pulp-degeneration"},{"code":"K04.3","title":"Abnormal hard tissue formation in pulp","description":"Abnormal hard tissue formation in pulp is a billable ICD-10-CM diagnosis code (K04.3). Inclusion terms: Secondary or irregular dentine.","isBillable":true,"slug":"k04.3-abnormal-hard-tissue-formation-in-pulp"},{"code":"K04.4","title":"Acute apical periodontitis of pulpal origin","description":"Acute apical periodontitis of pulpal origin is a billable ICD-10-CM diagnosis code (K04.4). Inclusion terms: Acute apical periodontitis NOS. Excludes1 (not coded here): acute periodontitis (K05.2-).","isBillable":true,"slug":"k04.4-acute-apical-periodontitis-of-pulpal-origin"},{"code":"K04.5","title":"Chronic apical periodontitis","description":"Chronic apical periodontitis is a billable ICD-10-CM diagnosis code (K04.5). Inclusion terms: Apical or periapical granuloma; Apical periodontitis NOS. Excludes1 (not coded here): chronic periodontitis (K05.3-).","isBillable":true,"slug":"k04.5-chronic-apical-periodontitis"},{"code":"K04.6","title":"Periapical abscess with sinus","description":"Periapical abscess with sinus is a billable ICD-10-CM diagnosis code (K04.6). Inclusion terms: Dental abscess with sinus; Dentoalveolar abscess with sinus.","isBillable":true,"slug":"k04.6-periapical-abscess-with-sinus"},{"code":"K04.7","title":"Periapical abscess without sinus","description":"Periapical abscess without sinus is a billable ICD-10-CM diagnosis code (K04.7). Inclusion terms: Dental abscess without sinus; Dentoalveolar abscess without sinus.","isBillable":true,"slug":"k04.7-periapical-abscess-without-sinus"},{"code":"K04.8","title":"Radicular cyst","description":"Radicular cyst is a billable ICD-10-CM diagnosis code (K04.8). Inclusion terms: Apical (periodontal) cyst; Periapical cyst; Residual radicular cyst. Excludes2 (not included here): lateral periodontal cyst (K09.0).","isBillable":true,"slug":"k04.8-radicular-cyst"},{"code":"K04.9","title":"Other and unspecified diseases of pulp and periapical tissues","description":"Other and unspecified diseases of pulp and periapical tissues is a non-billable ICD-10-CM category code (K04.9). A more specific billable subcode must be selected for claims submission.","isBillable":false,"slug":"k04.9-other-and-unspecified-diseases-of-pulp-and-periapical-tissues"},{"code":"K04.90","title":"Unspecified diseases of pulp and periapical tissues","description":"Unspecified diseases of pulp and periapical tissues is a billable ICD-10-CM diagnosis code (K04.90).","isBillable":true,"slug":"k04.90-unspecified-diseases-of-pulp-and-periapical-tissues"},{"code":"K04.99","title":"Other diseases of pulp and periapical tissues","description":"Other diseases of pulp and periapical tissues is a billable ICD-10-CM diagnosis code (K04.99).","isBillable":true,"slug":"k04.99-other-diseases-of-pulp-and-periapical-tissues"}],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}