{"code":"H40.2221","type":"code","title":"Chronic angle-closure glaucoma, left eye, mild stage","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["aqueous misdirection (H40.83-)","malignant glaucoma (H40.83-)","absolute glaucoma (H44.51-)","congenital glaucoma (Q15.0)","traumatic glaucoma due to birth injury (P15.3)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Chronic angle-closure glaucoma, left eye, mild stage is a billable ICD-10-CM diagnosis code (H40.2221). Excludes1 (not coded here): aqueous misdirection (H40.83-); malignant glaucoma (H40.83-); absolute glaucoma (H44.51-); congenital glaucoma (Q15.0); traumatic glaucoma due to birth injury (P15.3). 7th character: One of the following 7th characters is to be assigned to each code in subcategory H40.22 to designate the stage of glaucoma.","officialDefinition":"Chronic angle-closure glaucoma, left eye, mild stage is a billable ICD-10-CM diagnosis code (H40.2221). Excludes1 (not coded here): aqueous misdirection (H40.83-); malignant glaucoma (H40.83-); absolute glaucoma (H44.51-); congenital glaucoma (Q15.0); traumatic glaucoma due to birth injury (P15.3). 7th character: One of the following 7th characters is to be assigned to each code in subcategory H40.22 to designate the stage of glaucoma.","seventhCharacterInstructions":["One of the following 7th characters is to be assigned to each code in subcategory H40.22 to designate the stage of glaucoma"],"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":""}