Conjunctivitis

Instructional notes

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers coding glaucoma by type, eye, and stage, including bilateral cases and stage changes, and coding blindness or low vision when the impairment category is undocumented.

• Glaucoma (page 48)
• Blindness (page 49)

Read Section I.C.7 (page 48)

All codes under H10

H10 can't be used on a claim. Pick a billable code below; grey headings group them.

• H10.0Mucopurulent conjunctivitis
• H10.01Acute follicular conjunctivitis
• H10.011Acute follicular conjunctivitis, right eye
• H10.012Acute follicular conjunctivitis, left eye
• H10.013Acute follicular conjunctivitis, bilateral
• H10.019Acute follicular conjunctivitis, unspecified eye
• H10.02Other mucopurulent conjunctivitis
• H10.021Other mucopurulent conjunctivitis, right eye
• H10.022Other mucopurulent conjunctivitis, left eye
• H10.023Other mucopurulent conjunctivitis, bilateral
• H10.029Other mucopurulent conjunctivitis, unspecified eye
• H10.1Acute atopic conjunctivitis
• H10.10Acute atopic conjunctivitis, unspecified eye
• H10.11Acute atopic conjunctivitis, right eye
• H10.12Acute atopic conjunctivitis, left eye
• H10.13Acute atopic conjunctivitis, bilateral
• H10.2Other acute conjunctivitis
• H10.21Acute toxic conjunctivitis
• H10.211Acute toxic conjunctivitis, right eye
• H10.212Acute toxic conjunctivitis, left eye
• H10.213Acute toxic conjunctivitis, bilateral
• H10.219Acute toxic conjunctivitis, unspecified eye
• H10.22Pseudomembranous conjunctivitis
• H10.221Pseudomembranous conjunctivitis, right eye
• H10.222Pseudomembranous conjunctivitis, left eye
• H10.223Pseudomembranous conjunctivitis, bilateral
• H10.229Pseudomembranous conjunctivitis, unspecified eye
• H10.23Serous conjunctivitis, except viral
• 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
• H10.3Unspecified acute conjunctivitis
• H10.30Unspecified acute conjunctivitis, unspecified eye
• H10.31Unspecified acute conjunctivitis, right eye
• H10.32Unspecified acute conjunctivitis, left eye
• H10.33Unspecified acute conjunctivitis, bilateral
• H10.4Chronic conjunctivitis
• H10.40Unspecified chronic conjunctivitis
• H10.401Unspecified chronic conjunctivitis, right eye
• H10.402Unspecified chronic conjunctivitis, left eye
• H10.403Unspecified chronic conjunctivitis, bilateral
• H10.409Unspecified chronic conjunctivitis, unspecified eye
• H10.41Chronic giant papillary conjunctivitis
• 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
• H10.42Simple chronic conjunctivitis
• H10.421Simple chronic conjunctivitis, right eye
• H10.422Simple chronic conjunctivitis, left eye
• H10.423Simple chronic conjunctivitis, bilateral
• H10.429Simple chronic conjunctivitis, unspecified eye
• H10.43Chronic follicular conjunctivitis
• H10.431Chronic follicular conjunctivitis, right eye
• H10.432Chronic follicular conjunctivitis, left eye
• H10.433Chronic follicular conjunctivitis, bilateral
• H10.439Chronic follicular conjunctivitis, unspecified eye
• H10.44Vernal conjunctivitis
• H10.45Other chronic allergic conjunctivitis
• H10.5Blepharoconjunctivitis
• H10.50Unspecified blepharoconjunctivitis
• H10.501Unspecified blepharoconjunctivitis, right eye
• H10.502Unspecified blepharoconjunctivitis, left eye
• H10.503Unspecified blepharoconjunctivitis, bilateral
• H10.509Unspecified blepharoconjunctivitis, unspecified eye
• H10.51Ligneous conjunctivitis
• H10.511Ligneous conjunctivitis, right eye
• H10.512Ligneous conjunctivitis, left eye
• H10.513Ligneous conjunctivitis, bilateral
• H10.519Ligneous conjunctivitis, unspecified eye
• H10.52Angular blepharoconjunctivitis
• H10.521Angular blepharoconjunctivitis, right eye
• H10.522Angular blepharoconjunctivitis, left eye
• H10.523Angular blepharoconjunctivitis, bilateral
• H10.529Angular blepharoconjunctivitis, unspecified eye
• H10.53Contact blepharoconjunctivitis
• H10.531Contact blepharoconjunctivitis, right eye
• H10.532Contact blepharoconjunctivitis, left eye
• H10.533Contact blepharoconjunctivitis, bilateral
• H10.539Contact blepharoconjunctivitis, unspecified eye
• H10.8Other conjunctivitis
• H10.81Pingueculitis
• H10.811Pingueculitis, right eye
• H10.812Pingueculitis, left eye
• H10.813Pingueculitis, bilateral
• H10.819Pingueculitis, unspecified eye
• H10.82Rosacea conjunctivitis
• H10.821Rosacea conjunctivitis, right eye
• H10.822Rosacea conjunctivitis, left eye
• H10.823Rosacea conjunctivitis, bilateral
• H10.829Rosacea conjunctivitis, unspecified eye
• H10.89Other conjunctivitis
• H10.9Unspecified conjunctivitis

H10 MS-DRGs

As the principal diagnosis, all 72 billable codes under H10 group to MS-DRG 124 or 125 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

• DRG 124 Other Disorders of the Eye with MCC or Thrombolytic Agent
• DRG 125 Other Disorders of the Eye without MCC

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.