{"code":"R21","type":"category","title":"Rash and other nonspecific skin eruption","codeAlso":[],"includes":["rash NOS"],"modern_v":"official26","codeFirst":[],"excludes1":["specified type of rash- code to condition","vesicular eruption (R23.8)"],"excludes2":["symptoms relating to breast (N64.4-N64.5)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Rash and other nonspecific skin eruption is a billable ICD-10-CM diagnosis code (R21). Includes: rash NOS. Excludes1 (not coded here): specified type of rash- code to condition; vesicular eruption (R23.8). Excludes2 (not included here): symptoms relating to breast (N64.4-N64.5).","officialDefinition":"Rash and other nonspecific skin eruption is a billable ICD-10-CM diagnosis code (R21). Includes: rash NOS. Excludes1 (not coded here): specified type of rash- code to condition; vesicular eruption (R23.8). Excludes2 (not included here): symptoms relating to breast (N64.4-N64.5).","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":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":""}