D74.9 Methemoglobinemia, unspecified

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

MS-DRG index

Defines the logic of DRG(s) 811-812 in MDC 16.

Approximate ICD-9-CM (GEMs)

• 289.7 Methemoglobinemia (approximate)

Code annotations containing back-references to D74.9

Back-references to D74

• Type 1 Excludes: D58.2 Other hemoglobinopathies ("methemoglobinemia (D74.-)")

Diagnosis Index entries for D74.9

• Methemoglobinemia

Nearby codes

• D74 Methemoglobinemia
• D74.0 Congenital methemoglobinemia
• D74.8 Other methemoglobinemias
• D74.9 Methemoglobinemia, unspecified (this code)