2020 ICD-10-CM Diagnosis Code D74.9

Methemoglobinemia, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • D74.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM D74.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of D74.9 - other international versions of ICD-10 D74.9 may differ.
The following code(s) above D74.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to D74.9:
  • D50-D89
    2020 ICD-10-CM Range D50-D89

    Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism

    Type 2 Excludes
    • autoimmune disease (systemic) NOS (M35.9)
    • certain conditions originating in the perinatal period (P00-P96)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • human immunodeficiency virus [HIV] disease (B20)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Approximate Synonyms
  • Methemoglobinemia
Clinical Information
  • A condition in which a higher-than-normal amount of methemoglobin is found in the blood. Methemoglobin is a form of hemoglobin that cannot carry oxygen. In methemoglobinemia, tissues cannot get enough oxygen. Symptoms may include headache, dizziness, fatigue, shortness of breath, nausea, vomiting, rapid heartbeat, loss of muscle coordination, and blue-colored skin. Methemoglobinemia can be caused by injury or being exposed to certain drugs, chemicals, or foods. It can also be an inherited condition.
  • An inherited or acquired condition characterized by abnormally increased levels of methemoglobin in the blood. Signs and symptoms include cyanosis, dyspnea, headache, fatigue, mental status changes, and loss of consciousness.
  • The presence of methemoglobin in the blood, resulting in cyanosis. A small amount of methemoglobin is present in the blood normally, but injury or toxic agents convert a larger proportion of hemoglobin into methemoglobin, which does not function reversibly as an oxygen carrier. Methemoglobinemia may be due to a defect in the enzyme nadh methemoglobin reductase (an autosomal recessive trait) or to an abnormality in hemoglobin m (an autosomal dominant trait). (Dorland, 27th ed)
ICD-10-CM D74.9 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 811 Red blood cell disorders with mcc
  • 812 Red blood cell disorders without mcc

Convert D74.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to D74.9:

ICD-10-CM Codes Adjacent To D74.9
D73.3 Abscess of spleen
D73.4 Cyst of spleen
D73.5 Infarction of spleen
D73.8 Other diseases of spleen
D73.81 Neutropenic splenomegaly
D73.89 Other diseases of spleen
D73.9 Disease of spleen, unspecified
D74 Methemoglobinemia
D74.0 Congenital methemoglobinemia
D74.8 Other methemoglobinemias
D74.9 Methemoglobinemia, unspecified
D75 Other and unspecified diseases of blood and blood-forming organs
D75.0 Familial erythrocytosis
D75.1 Secondary polycythemia
D75.8 Other specified diseases of blood and blood-forming organs
D75.81 Myelofibrosis
D75.82 Heparin induced thrombocytopenia (HIT)
D75.89 Other specified diseases of blood and blood-forming organs
D75.9 Disease of blood and blood-forming organs, unspecified
D75.A Glucose-6-phosphate dehydrogenase (G6PD) deficiency without anemia
D76 Other specified diseases with participation of lymphoreticular and reticulohistiocytic tissue

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.