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R79.1

✓ Billable

Abnormal coagulation profile

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

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Also Known As

Abnormal or prolonged bleeding timeAbnormal or prolonged coagulation timeAbnormal or prolonged partial thromboplastin time [PTT]Abnormal or prolonged prothrombin time [PT]Low von Willebrand factor

❌ Excludes1

direct

Cannot be coded with R79.1

  • • coagulation defects (D68.-)

❌ Excludes1

inherited from R79

Rules from parent category R79: Other abnormal findings of blood chemistry

  • • asymptomatic hyperuricemia (E79.0)
  • • hyperglycemia NOS (R73.9)
  • • hypoglycemia NOS (E16.2)
  • • neonatal hypoglycemia (P70.3-P70.4)
  • • specific findings indicating disorder of amino-acid metabolism (E70-E72)
  • • specific findings indicating disorder of carbohydrate metabolism (E73-E74)
  • • specific findings indicating disorder of lipid metabolism (E75.-)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • abnormality of fluid, electrolyte or acid-base balance (E86-E87)

📋 Code Instructions

from R79
  • • code to identify any retained foreign body, if applicable (Z18.-)

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Code Information

CodeR79.1
BillableYes
ParentR79
CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Excludes18 rule(s)
Excludes21 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)