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Home/Diagnosis/ICD-10 Coding for Macrocytosis

ICD-10 Coding for Macrocytosis

D51.0
R71.8

Complete ICD-10-CM coding and documentation guide for icd-10 coding for macrocytosis includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Macrocytic anemia
Enlarged red blood cells
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Key Information: ICD-10 Coding for Macrocytosis

Essential facts and insights about ICD-10 Coding for Macrocytosis

Use ICD-10 code D51.0 for vitamin b12 deficiency anemia, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Vitamin B12 deficiency anemia

Billable Code
D51.0
Billable

Diagnostic Criteria

  • • MCV >100 fL
  • • Serum B12 <200 pg/mL
  • • Hypersegmented neutrophils

Applicable To

  • • Pernicious anemia

Important Notes

  • • Ensure B12 deficiency is documented with lab results.

Other abnormal findings of blood chemistry

Billable Code
R71.8
Billable

Diagnostic Criteria

  • • MCV >100 fL
  • • Normal hemoglobin and hematocrit

Applicable To

  • • Macrocytosis without anemia

Important Notes

  • • Document absence of anemia and specific causes.
Ancillary Codes

Additional codes that may be used with this diagnosis

R71.8

Other abnormal findings of blood chemistry

Use when macrocytosis is present without a specific cause.

Frequently Asked Questions

What is the ICD-10 code for macrocytosis?

The ICD-10 code for macrocytosis without a specific cause is R71.8. If due to B12 deficiency, use D51.0.

How do you code macrocytosis with B12 deficiency?

Code D51.0 for macrocytosis due to confirmed B12 deficiency, supported by lab results.

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