cpt 00164, cpt code 00164, 00164 cpt code
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CPT 00164 | Anesthesia For Soft Tissue Biopsy Of The Nose & Accessory Sinuses

CPT code 00164 can be reported when an anesthesia provider performs an anesthesia service during a soft tissue biopsy of a patient’s nose and accessory sinuses.


The official description of the 00164 CPT code is: “Anesthesia for procedures on nose and accessory sinuses; biopsy, soft tissue.

The American Society of Anesthesiologists (ASA) assigned four base units to CPT 00164.


An anesthesia provider performs a pre-operative evaluation of the patient before the soft tissue biopsy of a patient’s nose and accessory sinuses.

The anesthesia provider induces the patient and monitors the patient during the biopsy of the soft tissue of the nose and accessory sinuses. Then, another provider performs the biopsy. 

The anesthesia provider notes any types and amounts of medications administered during the procedure. In addition, all monitoring forms are used, including patient responses and anesthesia care start and stop times. 

Following the biopsy of the soft tissue biopsy of a patient’s nose and accessory sinuses, the anesthesia provider oversees the patient’s transfer to post-anesthesia care. 

Historical Information

Change TypeChange DatePrevious Descriptor
Code Added01-01-1990

ICD-10-CM Codes For CPT 00164

A15.8Other respiratory tuberculosis
A15.9Respiratory tuberculosis unspecified
C30.0Malignant neoplasm of nasal cavity
C44.301Unspecified malignant neoplasm of skin of nose
C4A.31Merkel cell carcinoma of nose
C76.0Malignant neoplasm of head, face and neck
C78.39Secondary malignant neoplasm of other respiratory organs
D02.3Carcinoma in situ of other parts of respiratory system
D14.0Benign neoplasm of middle ear, nasal cavity and accessory sinuses
D23.39Other benign neoplasm of skin of other parts of face
D38.5Neoplasm of uncertain behavior of other respiratory organs
D49.1Neoplasm of unspecified behavior of respiratory system
J00Acute nasopharyngitis [common cold]
J31.0Chronic rhinitis
J33.0Polyp of nasal cavity
J33.9Nasal polyp, unspecified
J34.0Abscess, furuncle and carbuncle of nose
J34.1Cyst and mucocele of nose and nasal sinus
J34.81Nasal mucositis (ulcerative)
J34.89Other specified disorders of nose and nasal sinuses
J34.9Unspecified disorder of nose and nasal sinuses
M31.30Wegener’s granulomatosis without renal involvement
M31.31Wegener’s granulomatosis with renal involvement
R09.81Nasal congestion
R22.0Localized swelling, mass and lump, head

Go back to the complete list with the CPT Codes for general anesthesia.

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