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  6. 2024 ICD-10-CM Code I80.9

2024 ICD-10-CM Diagnosis Code I80.9

Phlebitis and thrombophlebitis of unspecified site

ICD-10-CM Code:
I80.9
ICD-10 Code for:
Phlebitis and thrombophlebitis of unspecified site
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Diseases of the circulatory system
    (I00–I99)
    • Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
      (I80-I89)
      • Phlebitis and thrombophlebitis
        (I80)

I80.9 is a billable diagnosis code used to specify a medical diagnosis of phlebitis and thrombophlebitis of unspecified site. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like I80.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Deep thrombophlebitis
  • Endophlebitis
  • Periphlebitis
  • Phlebitis
  • Phlebitis after infusion
  • Phlebitis as a complication of care
  • Phlebitis due to procedure
  • Phlebitis during procedure
  • Phlebitis during procedure
  • Phlebitis following perfusion
  • Phlebitis following transfusion
  • Radiation thrombophlebitis
  • Septic thrombophlebitis
  • Sequela of phlebitis
  • Superficial thrombophlebitis
  • Superficial thrombophlebitis following administration of drug via intravenous route
  • Suppurative phlebitis
  • Thrombophlebitis
  • Thrombophlebitis after infusion
  • Thrombophlebitis due to procedure
  • Thrombophlebitis during procedure
  • Thrombophlebitis following perfusion
  • Thrombophlebitis following transfusion
  • Thrombophlebitis of the newborn

Clinical Classification

Clinical Information

  • Cavernous Sinus Thrombosis

    formation or presence of a blood clot (thrombus) in the cavernous sinus of the brain. infections of the paranasal sinuses and adjacent structures, craniocerebral trauma, and thrombophilia are associated conditions. clinical manifestations include dysfunction of cranial nerves iii, iv, v, and vi, marked periorbital swelling, chemosis, fever, and visual loss. (from adams et al., principles of neurology, 6th ed, p711)

  • Lateral Sinus Thrombosis

    formation or presence of a blood clot (thrombus) in the lateral sinuses. this condition is often associated with ear infections (otitis media or mastoiditis) without antibiotic treatment. in developed nations, lateral sinus thrombosis can result from craniocerebral trauma; brain neoplasms; neurosurgical procedures; thrombophilia; and other conditions. clinical features include headache; vertigo; and increased intracranial pressure.

  • Phlebitis

    inflammation of a vein, often a vein in the leg. phlebitis associated with a blood clot is called (thrombophlebitis).

  • Sagittal Sinus Thrombosis

    formation or presence of a blood clot (thrombus) in the superior sagittal sinus or the inferior sagittal sinus. sagittal sinus thrombosis can result from infections, hematological disorders, craniocerebral trauma; and neurosurgical procedures. clinical features are primarily related to the increased intracranial pressure causing headache; nausea; and vomiting. severe cases can evolve to seizures or coma.

  • Sinus Thrombosis, Intracranial

    formation or presence of a blood clot (thrombus) in the cranial sinuses, large endothelium-lined venous channels situated within the skull. intracranial sinuses, also called cranial venous sinuses, include the superior sagittal, cavernous, lateral, petrous sinuses, and many others. cranial sinus thrombosis can lead to severe headache; seizure; and other neurological defects.

  • Thrombophlebitis

    inflammation of a vein associated with a blood clot (thrombus).

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert I80.9 to ICD-9-CM

  • ICD-9-CM Code: 451.9 - Thrombophlebitis NOS

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.