Viral conjunctivitis (B30) ICD-10-CM
The B30 code range covers viral conjunctivitis with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the B30 Range 7 codes · 6 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B30 range.
Conjunctivitis, Viral
Inflammation, often mild, of the conjunctiva caused by a variety of viral agents. Conjunctival involvement may be part of a systemic infection.
About the B30 Code Range
Viral conjunctivitis is inflammation of the conjunctiva, part of the eye, caused by a virus.
The subdivisions distinguish adenovirus-related inflammation involving both the cornea and conjunctiva (B30.0) from conjunctivitis alone (B30.1). B30.2 identifies viral inflammation involving the throat and conjunctiva. B30.3 identifies an acute epidemic form with bleeding caused by an enterovirus. B30.8 names other viral conjunctivitis, while B30.9 leaves the type unspecified.
Questions About This Page
How many billable codes are in the B30 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B30 range classify?
The range classifies viral conjunctivitis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
