Diagnosis Code


Code Information

Diagnosis Code: R79.1

Short Description: Abnormal coagulation profile

Long Description: Abnormal coagulation profile

The code R79.1 is VALID for claim submission

Code Classification:

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Abnormal findings on examination of blood, without diagnosis (R70-R79)
      • Other abnormal findings of blood chemistry (R79)
        • R79.1 Abnormal coagulation profile

Code Version: 2022 ICD-10-CM


  • Clotting time above reference range
  • Coag./bleeding tests abnormal
  • D-dimer above reference range
  • Deviation of international normalized ratio from target range
  • Extrinsic coagulation pathway finding
  • Hormone replacement therapy bleed pattern - abnormal
  • INR - international normal ratio abnormal
  • INR raised
  • Intrinsic coagulation pathway finding
  • Menopause monitoring status
  • Partial thromboplastin time finding
  • Partial thromboplastin time increased
  • Prothrombin time abnormal
  • Prothrombin time finding
  • Prothrombin time increased
  • Prothrombin time low
  • Thrombin time abnormal

Diagnostic Related Group(s)

The code R79.1 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39.0)
  • Signs And Symptoms With Mcc (947)
  • Signs And Symptoms Without Mcc (948)

References to Index of Diseases and Injuries

The code R79.1 has the following ICD-10-CM references to the Index of Diseases and Injuries
  • Inclusion Terms:
    • Abnormal or prolonged bleeding time
    • Abnormal or prolonged coagulation time
    • Abnormal or prolonged partial thromboplastin time [PTT]
    • Abnormal or prolonged prothrombin time [PT]
  • Type 1 Excludes Notes:
    • coagulation defects (@D68*.-)
  • Type 2 Excludes Notes:

Crosswalk Information

ICD-10 Code ICD-9 Code ICD-9 Description
R79.1 Right Arrow 790.92 Abnrml coagultion prfile

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code ICD-10 Description
R79 Other abnormal findings of blood chemistry
R79.0 Abnormal level of blood mineral
R79.8 Other specified abnormal findings of blood chemistry
R79.81 Abnormal blood-gas level
R79.82 Elevated C-reactive protein (CRP)
R79.83 Abnormal findings of blood amino-acid level
R79.89 Other specified abnormal findings of blood chemistry
R79.9 Abnormal finding of blood chemistry, unspecified

This page was last updated on: 10/1/2021