H53.61 Abnormal dark adaptation curve

Billable ICD-10-CM code, FY2026.

Applies from H53.6 Night blindness

Excludes1 (never code together)

• night blindness due to vitamin A deficiency (E50.5)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 368.63 Abnormal dark adaptation curve

Diagnosis Index entries for H53.61

• Abnormal, abnormality, abnormalities › dark adaptation curve
• Blindness (acquired) (congenital) (both eyes) › night › abnormal dark adaptation curve

Nearby codes

• H53.54 Protanomaly
• H53.55 Tritanomaly
• H53.59 Other color vision deficiencies
• H53.6 Night blindness
• H53.60 Unspecified night blindness
• H53.61 Abnormal dark adaptation curve (this code)
• H53.62 Acquired night blindness
• H53.63 Congenital night blindness
• H53.69 Other night blindness
• H53.7 Vision sensitivity deficiencies
• H53.71 Glare sensitivity