CPT 00904: Anesthesia for Radical Perineal Procedure
CPT code 00904 represents anesthesia services delivered for radical perineal procedures — major surgical interventions involving complete removal of diseased tissue in the perineal and genital area. Nationally, this code is relevant for billing and clinical documentation in hospitals and surgical centers where complex perineal operations occur and where anesthesia teams manage high-risk, invasive procedures.
Key payers in scope include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for the code, typical sites of service, and how the code maps to related surgical procedures. The publication outlines common billing considerations and associated clinical scenarios (for example, procedures addressing penile and perineal disease) and highlights related procedural codes that commonly appear on the same claim. Policy and reimbursement benchmark summaries identify payer coverage patterns and coding practice themes important for compliance and revenue cycle staff.
This summary provides clinicians, anesthesia departments, and billing teams a clear reference for when 00904 applies, how it fits into procedural workflows, and which clinical situations typically generate use of the code. Data not available in the input is noted where applicable.
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Billing Code Overview
CPT code 00904 describes anesthesia services provided for a radical perineal procedure, defined as complete removal of all diseased tissue in the perineal region. The primary service type is anesthesia for major perineal surgery, supporting surgical teams during extensive procedures in the genital and perineal area. The typical site of service is an operating room or surgical suite where radical perineal procedures are performed under monitored anesthesia care or general/regional anesthesia.
Clinical & Coding Specifications
Clinical Context
A 62-year-old male presents with progressive difficulty urinating, recurrent balanitis, and chronic phimosis. Conservative measures failed and urology plans a radical perineal procedure to remove all diseased tissue around the perineum and distal penile structures; general endotracheal anesthesia is requested due to anticipated operative time and need for complete immobility. Preoperative evaluation by the anesthesia team documents American Society of Anesthesiologists (ASA) physical status P3 for controlled comorbidities (e.g., hypertension, type 2 diabetes). On the day of surgery the patient is transported to the ambulatory surgery center (or hospital operating room for more complex cases). Standard intraoperative monitoring is applied, induction with intravenous agents and endotracheal intubation performed by an anesthesiologist or a certified registered nurse anesthetist supervised by an anesthesiologist. Regional blocks are considered adjuncts for postoperative analgesia. The anesthesiology service codes 00904 for anesthesia for radical perineal procedure, documenting pre‑anesthesia evaluation, intraoperative management, and immediate postoperative handoff to recovery. Potential intraoperative events (significant blood loss, conversion or complication requiring return to operating room) may require modifier reporting per payer policy. Postoperative recovery includes pain control, monitoring for urinary complications, and discharge planning or inpatient admission based on clinical stability and procedure extent.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when work required is substantially greater than typically required for 00904 and documentation supports increased complexity. |
23 | Unusual anesthesia | Use when general anesthesia is administered for a procedure that is normally performed with local/regional anesthesia due to patient condition. |
50 | Bilateral procedure | Use when the radical perineal procedure is performed bilaterally and payer accepts bilateral modifier with anesthesia reporting. |
52 | Reduced services | Use when the anesthesia service is partially reduced or a portion of the planned procedure is not completed. |
53 | Discontinued procedure | Use when the procedure is started but terminated due to extenuating circumstances after anesthesia initiation. |
54 | Surgical care only | Use when reporting only the surgical care portion and anesthesia billing separates professional services accordingly. |
55 | Postoperative management only | Use when only postoperative management is provided by the anesthesiologist. |
62 | Two surgeons | Use when two surgeons with distinct roles operate concurrently in the perineal field and payer policy permits modifier reporting. |
78 | Return to operating room | Use when an unplanned return to the OR for related procedure occurs during the postoperative global period. |
AA | Anesthesia services by anesthesiologist | Use when service is personally performed by a physician anesthesiologist. |
AD | Medical direction by dentist anesthesiologist | Use when directed by a dentist anesthesiologist (if applicable by provider type and payer rules). |
AS | Physician assistant, nurse practitioner, or clinical nurse specialist | Use when anesthesia services are personally performed by a qualified non‑physician anesthetist in hospital settings per payer rules. |
QK | Medical direction of two, three, or four anesthetists | Use when the physician medically directs multiple CRNAs for the case. |
QS | Monitored anesthesia care (MAC) | Use when monitored anesthesia care is provided instead of general/regional anesthesia for perineal procedure. |
XE | Separate encounter | Use when a distinct anesthesia encounter separate from another service occurs on the same day and documentation supports distinctness. |
| Taxonomy Code | Specialty | Notes |
|---|---|---|
207L00000X | Anesthesiology | Primary specialty for administration of general and regional anesthesia for this procedure. |
207LA0401X | Pain Medicine (Anesthesiology) | Relevant when regional blocks or advanced perioperative analgesia techniques are provided by pain/anesthesia specialists. |
207LP2900X | Pediatric Anesthesiology | Applicable when 00904 is performed in pediatric patients requiring subspecialty pediatric anesthesia expertise. |
Related Diagnoses
| ICD-10 Code | Description | Clinical Relevance |
|---|---|---|
N47.1 | Phimosis | Foreskin cannot be retracted; may necessitate circumcision or radical perineal excision when recurrent infection or severe disease present. |
N47.2 | Paraphimosis | Retracted foreskin that cannot be returned, potentially requiring urgent surgical intervention under anesthesia. |
N48.1 | Balanitis | Inflammation/infection of the glans penis that can be refractory and require surgical excision of diseased tissue. |
N40.1 | Benign prostatic hyperplasia with lower urinary tract symptoms | Associated lower urinary tract dysfunction may prompt concurrent urologic procedures in the perineal region affecting anesthesia planning. |
N49.0 | Inflammatory disorders of the penis | Broad category for inflammatory penile conditions that can be indications for radical excision of diseased tissue. |
Related CPT Codes
| CPT Code | Description | Relationship to This Procedure |
|---|---|---|
54150 | Circumcision, using clamp or other device | May be an alternative or less extensive procedure for conditions such as phimosis or balanitis when radical perineal excision is not required. |
54160 | Circumcision, surgical excision other than clamp, device or dorsal slit | Surgical alternative for penile/foreskin pathology; may be performed in same anatomic region for related indications. |
54235 | Removal of penile prosthesis | Different indication but involves perineal/penile operative field; anesthesia planning and positioning considerations overlap. |
55700 | Biopsy, prostate; needle or punch, single or multiple, any approach | May be performed in the same operative episode for concurrent lower urinary tract pathology such as BPH with suspicious lesions. |