CPT 46040 Incision & Drainage Reimbursement | OpenPayer

Summary & Overview

CPT 46040: Incision and Drainage of Anorectal/Ischiorectal Abscess

CPT code 46040 identifies an incision and drainage procedure for anorectal abscesses, including ischiorectal pockets. This procedure is a common emergency or urgent surgical intervention to evacuate purulent collections around the anal canal and rectum and can be performed in ambulatory surgical centers, hospital operating rooms, or inpatient settings depending on clinical severity. Nationally, accurate coding of this service affects surgical quality metrics, hospital throughput, and payment for urgent anorectal care.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise clinical context for the procedure, typical sites of service, and common billing considerations. The publication summarizes national benchmarks where available, highlights recent policy updates relevant to surgical procedure coding and facility billing, and outlines the clinical scenarios that typically trigger use of this code. The content is intended to help coding professionals, revenue cycle staff, and clinical leaders understand where CPT code 46040 fits within anorectal surgical services and what to expect in payer coverage and billing workflows. Data not available in the input is noted where applicable.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 46040anorectal abscessincision and drainagesurgical procedurescolorectal surgeryambulatory surgeryhospital inpatientprocedure coding

Billing Code Overview

CPT code 46040 describes a surgical incision and drainage procedure for anorectal abscesses. The provider makes an incision around the anal canal to access and drain abscess pockets, including those located in the ischiorectal pocket or fossa, with direct evacuation of purulent material.

Service type: Surgical incision and drainage of anorectal/ischiorectal abscess
Typical site of service: Operative suite, ambulatory surgical center, or hospital inpatient setting depending on severity and patient condition

Clinical & Coding Specifications

Clinical Context

A typical patient is an adult presenting to the emergency department or outpatient surgery center with acute perianal pain, swelling, fever, or drainage. Examination reveals a tender fluctuant mass adjacent to the anal canal or deep in the ischiorectal fossa consistent with an anorectal abscess. Initial evaluation includes history, vital signs, focused anorectal exam, and point-of-care imaging (ultrasound or CT) when deep extension is suspected. The clinical workflow proceeds with consent, intravenous or local anesthesia (or monitored anesthesia care for deeper or complex abscesses), positioning in lithotomy or prone jackknife, perianal antisepsis, and placement of an appropriate incision in the anoderm or perianal skin to establish drainage of purulent material. Culture may be obtained. Packing or placement of a drain may follow; wound care instructions and short-course antibiotics are provided when indicated. Follow-up is arranged with colorectal surgery, general surgery, or primary care for wound checks and to evaluate for fistula formation. Typical site of service is the outpatient minor procedure room, ambulatory surgery center, emergency department, or inpatient operating room for complicated or immunocompromised patients. The service type is surgical, specifically a perianal/anorectal incision and drainage procedure coded as 46040.

Coding Specifications

Modifier	Description	When to Use
`22`	Increased procedural services

CPT 46050: Incision and Drainage of Superficial Perianal Abscess

CPT-46080-ANAL-SPHINCTEROTOMY-RELEASE-OF-ANAL-CONTRACTURE

CPT 46080: Anal Sphincterotomy to Release Anal Contracture

CPT-46070-ANAL-MEMBRANE-INCISION-INFANT

CPT 46070: Incision of Congenital Anal Membrane in Infant

CPT-46030-ANAL-SETON-REMOVAL-ANAL-FISTULA

CPT 46030: Removal of Anal Seton or Marker for Anal Fistula

CPT-46083-EXTERNAL-HEMORRHOID-THROMBECTOMY-INCISION-DRAINAGE

CPT 46083: Incision and Thrombectomy of External Hemorrhoid

CPT-46060-PERIRECTAL-ABSCESS-INCISION-DRAINAGE-FISTULA-MANAGEMENT

CPT 46060: Incision and Drainage of Perirectal Abscess with Fistula Management

CPT-46045-RECTAL-PERIRECTAL-ABSCESS-DRAINAGE-TRANSANAL

CPT 46045: Transanal Incision and Drainage of Rectal/Perirectal Abscess

CPT-46020-ANAL-SETON-PLACEMENT

CPT 46020: Anal Seton Placement, Minor Anorectal Surgery

Taxonomy Code	Specialty	Notes
`207P00000X`	General Surgery	Most common specialty performing anorectal incision and drainage.
`2080P0122X`	Colon & Rectal Surgery	Specialists who manage complex perianal and ischiorectal abscesses and fistulae.
`207L00000X`	Family Medicine	May perform I&D in urgent care or outpatient settings.
`207Q00000X`	Emergency Medicine	Often performs incision and drainage for acute abscesses in the ED setting.
`363LP0200X`	Nurse Practitioner (Surgical/Procedural)	Advanced practice clinicians who perform I&D per local privileging.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K61.0`	Anal abscess	Primary indication for incision and drainage of perianal/anorectal abscess.
`K61.1`	Ischiorectal abscess	Deep abscess in the ischiorectal fossa often requiring `46040` for adequate drainage.
`K61.2`	Intrapelvic abscess	Relevant when extension of anorectal infection involves pelvic spaces and requires more extensive drainage.
`K61.3`	Perianal abscess	Superficial perianal collections typically treated with bedside I&D or minor procedure.
`K60.3`	Fissure and fistula of anal and rectal regions	Fistula-in-ano can be a complication or concurrent diagnosis evaluated during drainage and follow-up.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`10160`	Puncture aspiration of abscess, complicated or multiple	May be used when needle aspiration (instead of incision) is performed for perianal abscesses or for additional abscess pockets.
`12032`	Repair, intermediate, wounds of scalp, axillae, trunk and/or extremities; 2.5 cm to 7.5 cm	Used if concurrent intermediate repair of perianal wounds is required after drainage (site-appropriate wound closure).
`51701`	Complex urethral catheterization, initial; e.g., difficult or in presence of obstruction	May be performed concurrently in patients requiring bladder drainage or monitoring in perioperative care (rare).
`99024`	Postoperative follow-up visit, global period, related to the procedure	Used for routine postoperative visits during the global period for `46040`.
`99284`	Emergency department visit, high severity	Commonly billed for ED evaluation that leads to performance of `46040` during the same encounter.
`99213`	Office or other outpatient visit for an established patient, low to moderate complexity	Used for pre- or post-procedure evaluation and wound checks in outpatient settings.

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