H01.004 Unspecified blepharitis left upper eyelid

Billable ICD-10-CM code, FY2026.

Applies from H01.0 Blepharitis

Excludes1 (never code together)

• blepharoconjunctivitis (H10.5-)

MS-DRG index

Defines the logic of DRG(s) 124-125 in MDC 02.

Approximate ICD-9-CM (GEMs)

• 373.00 Blepharitis, unspecified (approximate)

Diagnosis Index entries for H01.004

• Blepharitis (angularis) (ciliaris) (eyelid) (marginal) (nonulcerative) › left › upper

Nearby codes

• H01.0 Blepharitis
• H01.00 Unspecified blepharitis
• H01.001 Unspecified blepharitis right upper eyelid
• H01.002 Unspecified blepharitis right lower eyelid
• H01.003 Unspecified blepharitis right eye, unspecified eyelid
• H01.004 Unspecified blepharitis left upper eyelid (this code)
• H01.005 Unspecified blepharitis left lower eyelid
• H01.006 Unspecified blepharitis left eye, unspecified eyelid
• H01.009 Unspecified blepharitis unspecified eye, unspecified eyelid
• H01.00A Unspecified blepharitis right eye, upper and lower eyelids
• H01.00B Unspecified blepharitis left eye, upper and lower eyelids