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v1.0.0
ICD-10 Guide
DiagnosesLow Hemoglobin

Low Hemoglobin

ICD-10 Coding for Low Hemoglobin(D50.9, D64.9)

PRIMARY SPECIALTYHematology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Low Hemoglobin?
Essential facts and insights about Low Hemoglobin

Key Clinical Considerations:

  • Fatigue, weakness, pallor, shortness of breath
  • Complete blood count (CBC) showing low hemoglobin levels, reticulocyte count, peripheral blood smear
  • Pallor of the skin and mucous membranes, tachycardia, and signs of heart failure in severe cases

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history, physical examination findings, laboratory results, treatment plan
  • ICD-10-CM codes for anemia, specific type of anemia if known
  • Example: 'Patient presents with fatigue and pallor, CBC shows hemoglobin of 9 g/dL.'

Coding Guidelines

Usage Guidelines & Examples

  • Follow guidelines for specificity in coding anemia types.
  • Common errors include using unspecified codes when specific types are known.

Code Exclusions

Important Exclusions

  • Acute blood loss anemia, hemolytic anemia
  • Alternative codes for specific types of anemia such as aplastic anemia

Related ICD-10 Codes

Primary Codes
D64.9
Anemia, unspecified
D50.9
Iron deficiency anemia, unspecified
Ancillary Codes
Z79.2
Differential Codes
D63.8
D50.9
D50.9
if iron deficiency is confirmed, even if the cause is unspecified.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Hematology

Specialty Applications

  • All age groups, particularly those with chronic diseases or nutritional deficiencies
  • Outpatient and inpatient settings

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

Documentation requirements?

Include patient symptoms, lab results, and treatment plan.

Billing considerations?

Ensure accurate coding to reflect the type of anemia for proper reimbursement.