- R79.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM R79.1 became effective on October 1, 2022.
- This is the American ICD-10-CM version of R79.1 – other international versions of ICD-10 R79.1 may differ.
ICD-10-CM R79.1 is grouped within Diagnostic Related Group(s):
Applicable To
- Abnormal or prolonged bleeding time
- Abnormal or prolonged coagulation time
- Abnormal or prolonged partial thromboplastin time [PTT]
- Abnormal or prolonged prothrombin time [PT]
- Low von Willebrand factor
Type 1 Excludes
- coagulation defects (D68.-)
Type 2 Excludes
- abnormality of fluid, electrolyte or acid-base balance (E86-E87)
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to R79.1:
- bleeding time > Abnormal, abnormality, abnormalities
- PTT > chemistry, blood R79.9
- profile > coagulation D68.9
- time > coagulation D68.9
- partial thromboplastin time (PTT) > Abnormal, abnormality, abnormalities
- prothrombin time (PT) > Abnormal, abnormality, abnormalities
- von Willebrand factor > Low
- bleeding (time) (idiopathic) > Prolonged, prolongation (of)
- coagulation (time) > Prolonged, prolongation (of)
- partial thromboplastin time (PTT) > Prolonged, prolongation (of)
- prothrombin time > Prolonged, prolongation (of)