{"code":"S00.221A","type":"code","title":"Blister (nonthermal) of right eyelid and periocular area, initial encounter","codeAlso":["for any associated infection"],"includes":["injuries of ear","injuries of eye","injuries of face [any part]","injuries of gum","injuries of jaw","injuries of oral cavity","injuries of palate","injuries of periocular area","injuries of scalp","injuries of temporomandibular joint area","injuries of tongue","injuries of tooth"],"modern_v":"official26","codeFirst":[],"excludes1":["diffuse cerebral contusion (S06.2-)","focal cerebral contusion (S06.3-)","injury of eye and orbit (S05.-)","open wound of head (S01.-)"],"excludes2":["superficial injury of conjunctiva and cornea (S05.0-)","burns and corrosions (T20-T32)","effects of foreign body in ear (T16)","effects of foreign body in larynx (T17.3)","effects of foreign body in mouth NOS (T18.0)","effects of foreign body in nose (T17.0-T17.1)","effects of foreign body in pharynx (T17.2)","effects of foreign body on external eye (T15.-)","frostbite (T33-T34)","insect bite or sting, venomous (T63.4)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["S00","S00.0","S00.00","S00.00XA","S00.00XD","S00.00XS","S00.01","S00.01XA","S00.01XD","S00.01XS","S00.02","S00.02XA","S00.02XD","S00.02XS","S00.03","S00.03XA","S00.03XD","S00.03XS","S00.04","S00.04XA","S00.04XD","S00.04XS","S00.05","S00.05XA","S00.05XD","S00.05XS","S00.06","S00.06XA","S00.06XD","S00.06XS","S00.07","S00.07XA","S00.07XD","S00.07XS","S00.1","S00.10XA","S00.10XD","S00.10XS","S00.11XA","S00.11XD","S00.11XS","S00.12XA","S00.12XD","S00.12XS","S00.2","S00.201","S00.201A","S00.201D","S00.201S","S00.202","S00.202A","S00.202D","S00.202S","S00.209","S00.209A","S00.209D","S00.209S","S00.211","S00.211A","S00.211D","S00.211S","S00.212","S00.212A","S00.212D","S00.212S","S00.219","S00.219A","S00.219D","S00.219S","S00.221","S00.221D","S00.221S","S00.222","S00.222A","S00.222D","S00.222S","S00.229","S00.229A","S00.229D","S00.229S","S00.241","S00.241A","S00.241D","S00.241S","S00.242","S00.242A","S00.242D","S00.242S","S00.249","S00.249A","S00.249D","S00.249S"],"inclusionTerms":[],"sibling_titles":{"code":"S00.249S","title":"External constriction of unspecified eyelid and periocular area, sequela","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Blister (nonthermal) of right eyelid and periocular area, initial encounter is a billable ICD-10-CM diagnosis code (S00.221A). Includes: injuries of ear; injuries of eye; injuries of face [any part]; injuries of gum; injuries of jaw; injuries of oral cavity; injuries of palate; injuries of periocular area; injuries of scalp; injuries of temporomandibular joint area; injuries of tongue; injuries of tooth. Excludes1 (not coded here): diffuse cerebral contusion (S06.","officialDefinition":"Blister (nonthermal) of right eyelid and periocular area, initial encounter is a billable ICD-10-CM diagnosis code (S00.221A). Includes: injuries of ear; injuries of eye; injuries of face [any part]; injuries of gum; injuries of jaw; injuries of oral cavity; injuries of palate; injuries of periocular area; injuries of scalp; injuries of temporomandibular joint area; injuries of tongue; injuries of tooth. Excludes1 (not coded here): diffuse cerebral contusion (S06.2-); focal cerebral contusion (S06.3-); injury of eye and orbit (S05.-); open wound of head (S01.-). Excludes2 (not included here): superficial injury of conjunctiva and cornea (S05.0-); burns and corrosions (T20-T32); effects of foreign body in ear (T16); effects of foreign body in larynx (T17.3); effects of foreign body in mouth NOS (T18.0); effects of foreign body in nose (T17.0-T17.1); effects of foreign body in pharynx (T17.2); effects of foreign body on external eye (T15.-); frostbite (T33-T34); insect bite or sting, venomous (T63.4). Code also: for any associated infection. 7th character: The appropriate 7th character is to be added to each code from category S00.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category S00"],"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":"","hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}