ICD-10 DIAGNOSIS CODE
Billable: Yes
Code Specificity: Low
Code Set: ICD-10-CM 2026
D64.9 represents anemia, unspecified. It is assigned when a healthcare provider diagnoses anemia but does not document the specific type or underlying cause. The ICD-10 for anemia depends on the provider's documentation and D64.9 should only be reported when a more specific diagnosis cannot be determined.
Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
Aplastic and other anemias and other bone marrow failure syndromes
Other anemias
Anemia, unspecified (this code)
The ICD-10 D64.9 diagnosis code is used when:
Common terms associated with ICD-10 anemia unspecified include:
Note: There is no single ICD-10 normocytic anemia code. Normocytic anemia ICD-10 coding depends on the documented underlying cause. Likewise, low hemoglobin ICD-10 is not the same as an anemia diagnosis. A low hemoglobin laboratory result alone should not be coded as anemia unless the provider documents the diagnosis.
Common CPT codes that may be billed with D64.9 when medically necessary include:
D64.9 should not be reported when documentation supports a more specific anemia diagnosis or when an Excludes1 condition applies.
Note: If the provider documents iron deficiency anemia, vitamin deficiency anemia, hemolytic anemia, aplastic anemia, chronic disease-related anemia or another specific anemia type, the corresponding ICD-10-CM code should be reported instead of D64.9.
Anemia occurs when the body has fewer red blood cells or lower levels of hemoglobin than normal, reducing the blood's ability to carry oxygen to tissues throughout the body. It is one of the most common hematologic conditions encountered in clinical practice.
The D64.9 diagnosis code is commonly used when anemia is confirmed but additional evaluation has not yet identified a specific cause.
Patients with anemia may experience:
Chronic anemia ICD-10 coding depends on the documented cause rather than the duration of the condition. If chronic anemia is linked to chronic kidney disease, cancer or another underlying disease, a more specific ICD-10-CM code should be assigned. D64.9 remains appropriate only when no specific cause has been documented.
Subclinical hypothyroidism occurs when thyroid stimulating hormone (TSH) levels are elevated while thyroid hormone levels, especially free T4, remain within normal ranges.
There is no separate ICD-10-CM code specifically dedicated only to subclinical hypothyroidism. In many cases, providers use E03.9 when the condition is documented as unspecified hypothyroidism.
The ICD-10 code anemia unspecified is D64.9. It is used when anemia is documented but the medical record does not identify the specific cause or classification.
The D64.9 diagnosis code represents anemia, unspecified. It is assigned when a provider confirms anemia but does not document its specific type or cause.
Yes. D64.9 is a billable ICD-10-CM code and may be submitted on healthcare claims when documentation supports an unspecified anemia diagnosis.
There is no dedicated ICD-10 normocytic anemia code. Normocytic anemia ICD-10 coding depends on the documented underlying cause. When no cause has been identified, D64.9 may be appropriate.
No. Low hemoglobin ICD-10 is a laboratory finding rather than a diagnosis. The provider must document anemia before an ICD-10-CM diagnosis code can be assigned.
Chronic anemia ICD-10 coding depends on the underlying condition. If chronic anemia is related to chronic kidney disease, cancer or another disease, a more specific ICD-10-CM code should be used. D64.9 is appropriate only when no cause is documented.
Common CPT codes include 85025 for a CBC with differential, 85045 for a reticulocyte count, 85060 for a peripheral blood smear, 83540 for an iron level, 83550 for TIBC and 82728 for ferritin testing.
A more specific ICD-10-CM code should be selected whenever documentation identifies the type or cause of anemia, including iron deficiency anemia, vitamin deficiency anemia, hemolytic anemia, aplastic anemia, acute blood loss anemia or anemia associated with chronic disease.
