{"code":"O91.22","type":"code","title":"Nonpurulent mastitis associated with the puerperium","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["mental and behavioral disorders associated with the puerperium (F53.-)","obstetrical tetanus (A34)","puerperal osteomalacia (M83.0)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["O91","O91.0","O91.01","O91.011","O91.012","O91.013","O91.019","O91.02","O91.03","O91.1","O91.11","O91.111","O91.112","O91.113","O91.119","O91.12","O91.13","O91.2","O91.21","O91.211","O91.212","O91.213","O91.219","O91.23"],"inclusionTerms":["Puerperal interstitial mastitis","Puerperal lymphangitis of breast","Puerperal mastitis NOS","Puerperal parenchymatous mastitis"],"sibling_titles":{"code":"O91.23","title":"Nonpurulent mastitis associated with lactation","isBillable":true},"useAdditionalCode":["code to identify infection"],"clinicalDefinition":"Nonpurulent mastitis associated with the puerperium is a billable ICD-10-CM diagnosis code (O91.22). Inclusion terms: Puerperal interstitial mastitis; Puerperal lymphangitis of breast; Puerperal mastitis NOS; Puerperal parenchymatous mastitis. Excludes2 (not included here): mental and behavioral disorders associated with the puerperium (F53.-); obstetrical tetanus (A34); puerperal osteomalacia (M83.0). Use additional code: code to identify infection.","officialDefinition":"Nonpurulent mastitis associated with the puerperium is a billable ICD-10-CM diagnosis code (O91.22). Inclusion terms: Puerperal interstitial mastitis; Puerperal lymphangitis of breast; Puerperal mastitis NOS; Puerperal parenchymatous mastitis. Excludes2 (not included here): mental and behavioral disorders associated with the puerperium (F53.-); obstetrical tetanus (A34); puerperal osteomalacia (M83.0). Use additional code: code to identify infection.","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":""}