ICD-10 codes for Conjunctivitis
Conjunctivitis is coded primarily under H10.9, H10.10, H10.45 in the ICD-10-CM (Clinical Modification) classification. Top-level categories include B30 (Viral conjunctivitis); H10 (Conjunctivitis). The 2025 ICD-10-CM code set includes 102 codes related to conjunctivitis, of which 78 are billable (specific enough to appear on a medical claim).
Conjunctivitis (pink eye) is inflammation of the conjunctiva. ICD-10-CM codes are split between H10 (general conjunctivitis) and B30 (viral conjunctivitis from adenovirus and other viruses). H10.9 covers unspecified conjunctivitis, while H10.45 is the code for other chronic allergic conjunctivitis.
Total Codes
102
Billable Codes
78
Categories
2
SNOMED CT Concepts
25+
Top 12 Relevant ICD-10 Codes
The codes most commonly assigned to conjunctivitis, ranked by primary-match status, billable status, and specificity. Tap a code to see its full ICD-10 detail page.
B30.9Viral conjunctivitis, unspecified
H10.9Unspecified conjunctivitis
H10.10Acute atopic conjunctivitis, unspecified eye
H10.45Other chronic allergic conjunctivitis
B30Viral conjunctivitis
B30.0Keratoconjunctivitis due to adenovirus
B30.1Conjunctivitis due to adenovirus
B30.2Viral pharyngoconjunctivitis
B30.3Acute epidemic hemorrhagic conjunctivitis (enteroviral)
B30.8Other viral conjunctivitis
H10.11Acute atopic conjunctivitis, right eye
H10.12Acute atopic conjunctivitis, left eye
Primary Code Categories
These are the top-level ICD-10-CM categories for conjunctivitis. Click any code to see all specific subcodes within that group.
Billable / Specific Codes (78)
Specific ICD-10-CM codes that can be reported on medical claims for conjunctivitis.
B30.0Keratoconjunctivitis due to adenovirus
B30.1Conjunctivitis due to adenovirus
B30.2Viral pharyngoconjunctivitis
B30.3Acute epidemic hemorrhagic conjunctivitis (enteroviral)
B30.8Other viral conjunctivitis
B30.9Viral conjunctivitis, unspecified
H10.011Acute follicular conjunctivitis, right eye
H10.012Acute follicular conjunctivitis, left eye
H10.013Acute follicular conjunctivitis, bilateral
H10.019Acute follicular conjunctivitis, unspecified eye
H10.021Other mucopurulent conjunctivitis, right eye
H10.022Other mucopurulent conjunctivitis, left eye
H10.023Other mucopurulent conjunctivitis, bilateral
H10.029Other mucopurulent conjunctivitis, unspecified eye
H10.10Acute atopic conjunctivitis, unspecified eye
H10.11Acute atopic conjunctivitis, right eye
H10.12Acute atopic conjunctivitis, left eye
H10.13Acute atopic conjunctivitis, bilateral
H10.211Acute toxic conjunctivitis, right eye
H10.212Acute toxic conjunctivitis, left eye
H10.213Acute toxic conjunctivitis, bilateral
H10.219Acute toxic conjunctivitis, unspecified eye
H10.221Pseudomembranous conjunctivitis, right eye
H10.222Pseudomembranous conjunctivitis, left eye
H10.223Pseudomembranous conjunctivitis, bilateral
H10.229Pseudomembranous conjunctivitis, unspecified eye
H10.231Serous conjunctivitis, except viral, right eye
H10.232Serous conjunctivitis, except viral, left eye
H10.233Serous conjunctivitis, except viral, bilateral
H10.239Serous conjunctivitis, except viral, unspecified eye
H10.30Unspecified acute conjunctivitis, unspecified eye
H10.31Unspecified acute conjunctivitis, right eye
H10.32Unspecified acute conjunctivitis, left eye
H10.33Unspecified acute conjunctivitis, bilateral
H10.401Unspecified chronic conjunctivitis, right eye
H10.402Unspecified chronic conjunctivitis, left eye
H10.403Unspecified chronic conjunctivitis, bilateral
H10.409Unspecified chronic conjunctivitis, unspecified eye
H10.411Chronic giant papillary conjunctivitis, right eye
H10.412Chronic giant papillary conjunctivitis, left eye
H10.413Chronic giant papillary conjunctivitis, bilateral
H10.419Chronic giant papillary conjunctivitis, unspecified eye
H10.421Simple chronic conjunctivitis, right eye
H10.422Simple chronic conjunctivitis, left eye
H10.423Simple chronic conjunctivitis, bilateral
H10.429Simple chronic conjunctivitis, unspecified eye
H10.431Chronic follicular conjunctivitis, right eye
H10.432Chronic follicular conjunctivitis, left eye
H10.433Chronic follicular conjunctivitis, bilateral
H10.439Chronic follicular conjunctivitis, unspecified eye
...and 28 more specific codes. Search all codes.
Cross-Mappings to Other Standards
ICD-10-CM codes for conjunctivitis link to several adjacent terminologies. These mappings are precomputed from official sources (NLM RxNav, UMLS Metathesaurus, SNOMED CT International) and served via AutoICD's reference and translate APIs.
SNOMED CT
25+ concepts mapped from this code group. Concept IDs include 15680481000119104, 15680801000119105, 15680841000119107, 15680881000119102, ....
Browse SNOMED CT directoryUMLS Metathesaurus
25+ CUIs indexed. Sample: C0009774, C0014493, C0349360, C0001305, ....
Browse UMLS directoryICD-11
ICD-11 (WHO 2022) classifies many of these conditions under different chapter and stem-code structures. Use the converter to see specific ICD-10 to ICD-11 mappings.
Open ICD-10 to ICD-11 converterFrequently Asked Questions
What is the ICD-10 code for conjunctivitis?
The primary ICD-10-CM codes for conjunctivitis are H10.9, H10.10, H10.45. Across all sub-categories, 102 codes are grouped under conjunctivitis, with 78 marked as billable (specific enough for a medical claim).
How many ICD-10 codes are there for conjunctivitis?
There are 102 ICD-10-CM codes related to conjunctivitis. Of these, 78 are billable specific codes and 24 are non-billable header categories that organize the specific codes underneath them. Header codes cannot be reported on a claim by themselves.
Is there a billable ICD-10 code for conjunctivitis?
Yes. 78 of the 102 ICD-10-CM codes for conjunctivitis are billable. Common examples include B30.0 (Keratoconjunctivitis due to adenovirus); B30.1 (Conjunctivitis due to adenovirus); B30.2 (Viral pharyngoconjunctivitis). Code to the highest level of specificity supported by the documentation.
Which conjunctivitis ICD-10 code should I use for billing?
The most commonly used billable codes for conjunctivitis include: B30.0 (Keratoconjunctivitis due to adenovirus); B30.1 (Conjunctivitis due to adenovirus); B30.2 (Viral pharyngoconjunctivitis). The correct code depends on the documented clinical presentation, including any complications, episode (acute / chronic), and laterality where applicable. Always code to the highest level of specificity supported by the clinical documentation.
Is H10.9 a billable ICD-10 code?
Yes, H10.9 (Unspecified conjunctivitis) is a billable / specific ICD-10-CM code that can be reported on insurance claims.
What are the SNOMED CT concepts for conjunctivitis?
The ICD-10 codes for conjunctivitis map to at least 25 SNOMED CT concepts. Examples of SNOMED CT concept IDs in this group include 15680481000119104, 15680801000119105, 15680841000119107, 15680881000119102, 15692481000119104. SNOMED CT is a clinical terminology used in electronic health records; AutoICD's coding API returns SNOMED CT IDs alongside each ICD-10 code via the include_snomed=true flag.
What UMLS Concept Unique Identifiers (CUIs) cover conjunctivitis?
The ICD-10 codes for conjunctivitis are linked to at least 25 UMLS CUIs in the National Library of Medicine's Metathesaurus. Sample CUIs include C0009774, C0014493, C0349360, C0001305, C0392644. UMLS CUIs unify the same concept across SNOMED CT, ICD-10, ICD-11, RxNorm, MeSH, and dozens of other source vocabularies.
What are other names for conjunctivitis in ICD-10?
Conjunctivitis may also be referred to as: conjunctivitis, pink eye, viral conjunctivitis, bacterial conjunctivitis, allergic conjunctivitis. The same ICD-10-CM codes apply regardless of which term appears in the clinical documentation. Synonyms are surfaced by AutoICD's NER pass and mapped to the canonical ICD-10 family above.
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