{"code":"H40.6","type":"code","title":"Glaucoma secondary to drugs","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["absolute glaucoma (H44.51-)","congenital glaucoma (Q15.0)","traumatic glaucoma due to birth injury (P15.3)"],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true},"inclusionTerms":[],"useAdditionalCode":["code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)"],"clinicalDefinition":"Glaucoma secondary to drugs is a non-billable ICD-10-CM category code (H40.6). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): absolute glaucoma (H44.51-); congenital glaucoma (Q15.0); traumatic glaucoma due to birth injury (P15.3). Use additional code: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5). 7th character: One of the following 7th characters is to be assigned to each code in subcategory H40.6 to designate the stage of glaucoma.","officialDefinition":"Glaucoma secondary to drugs is a non-billable ICD-10-CM category code (H40.6). A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): absolute glaucoma (H44.51-); congenital glaucoma (Q15.0); traumatic glaucoma due to birth injury (P15.3). Use additional code: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5). 7th character: One of the following 7th characters is to be assigned to each code in subcategory H40.6 to designate the stage of glaucoma.","seventhCharacterInstructions":["One of the following 7th characters is to be assigned to each code in subcategory H40.6 to designate the stage of glaucoma","0: stage unspecified","1: mild stage","2: moderate stage","3: severe stage","4: indeterminate stage"],"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":""}