2025 ICD-10-CM code I80.9
(Active) Effective Date: N/A Revision Date: N/A Deletion Date: N/A Diseases of the circulatory system - Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified Diseases of the circulatory system (I00-I99) Feed
Phlebitis and thrombophlebitis of unspecified site.
Not applicable to ICD-10 codes; Modifiers apply to procedural codes (CPT, HCPCS).
Medical necessity is established by the presence of symptoms and clinical findings consistent with phlebitis or thrombophlebitis.Further testing may be required to rule out other conditions.
Diagnosis and management of venous inflammation and/or thrombosis. This may involve clinical examination, diagnostic testing (e.g., ultrasound), and treatment (e.g., anticoagulation, supportive measures).
- Diseases of the circulatory system (I00-I99)
- I80-I89 (Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified)
In simple words: This code is used when someone has inflammation in a vein, possibly with a blood clot, but the exact location of the inflammation isn't known.
This code represents phlebitis (inflammation of a vein) and thrombophlebitis (inflammation of a vein with blood clot formation) where the specific location is unknown or not specified.It includes conditions such as endophlebitis, periphlebitis, and suppurative phlebitis, but excludes venous embolism and thrombosis of the lower extremities, those complicating pregnancy or childbirth, and those affecting specific locations like the intracranial or portal veins.
Example 1: A patient presents with pain, swelling, and redness in their leg, but the exact vein affected cannot be determined by physical exam or ultrasound.I80.9 is used., A patient with a history of deep vein thrombosis has persistent leg pain and swelling, but imaging does not identify a new clot.I80.9 may be used to code the ongoing venous inflammation., A patient is admitted to the hospital with symptoms suggestive of thrombophlebitis, but diagnostic tests are inconclusive regarding the precise location. I80.9 is the appropriate code.
* Detailed description of symptoms (pain, swelling, redness, warmth).* Location of the affected area (even if unspecified).* Results of any diagnostic tests (ultrasound, blood tests).* Treatment provided.* Physician's assessment and diagnosis.
** This code should be used only when the specific site of phlebitis or thrombophlebitis cannot be determined.Always strive for the most specific coding possible based on available clinical information.
- Revenue Code: This will depend on the specific services rendered and the payer's revenue code system.
- RVU: RVUs are not directly associated with ICD-10 codes.Reimbursement is determined by factors such as the services provided (CPT codes), place of service, and payer-specific rules.
- Global Days: Not applicable to ICD-10 codes.
- Payment Status: Active
- Modifier TC rule: Not applicable to ICD-10 codes.
- Fee Schedule: Not applicable to ICD-10 codes.
- Specialties:Vascular surgery, phlebology, internal medicine, family medicine
- Place of Service:Office, hospital inpatient, hospital outpatient, emergency room