CPT 45005 Rectal Abscess I&D Reimbursement | OpenPayer

Summary & Overview

CPT 45005: Incision & Drainage of Rectal Submucosal Abscess

CPT code 45005 identifies the surgical procedure for incision and drainage of a rectal submucosal abscess, a targeted intervention to evacuate pus from a walled-off pocket beneath the rectal mucosa. This code captures a common acute proctologic procedure that matters nationally because it addresses infection control, pain relief, and potential prevention of deeper or systemic complications. Payers commonly involved in coverage and reimbursement discussions for this procedure include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.

Readers will find clinical context for when the procedure is used, typical sites of service, and operational considerations that affect coding and billing. The publication outlines benchmarks for service delivery and utilization, highlights policy and coverage considerations relevant to major national payers, and summarizes clinical implications for care pathways. Data-driven benchmarking and payer policy summaries will help administrators and coding professionals align documentation and billing practices with clinical workflows. Data not available in the input for specific associated taxonomies, ICD-10 diagnoses, related codes, and payer-specific coverage edits is noted elsewhere in the full publication.

AetnaBlue Cross Blue ShieldCigna HealthUnitedHealthcareMedicareCPT 45005rectal abscessincision and drainageanorectal surgeryoutpatient surgeryprocedure codingsurgical codinginfection management

Billing Code Overview

CPT code 45005 describes the incision and drainage of an abscess located below the mucosal surface of the rectum. The procedure involves incising a walled-off sac or pocket of pus and draining its contents to relieve pain and prevent spread of infection.

Service type: Surgical — Minor anorectal procedure

Typical site of service: Ambulatory surgical center or hospital outpatient department; may also be performed in an emergency department or procedural clinic depending on clinical circumstances.

Clinical & Coding Specifications

Clinical Context

A 42-year-old adult presents to the outpatient colorectal clinic with a 4-day history of increasing perirectal pain, swelling, and fever. On examination, the patient has a tender, fluctuant submucosal rectal mass with erythema and induration; digital rectal exam elicits purulent drainage when pressure is applied. The clinician diagnoses a submucosal rectal abscess and schedules an incision and drainage procedure. The patient is positioned in the prone jackknife or lithotomy position depending on operator preference and airway considerations. Local anesthesia with or without sedation is administered. The provider incises the located abscess beneath the rectal mucosa, evacuates purulent material, cultures the drainage as indicated, achieves hemostasis, and places packing or a drain when clinically appropriate. Post-procedure care includes antibiotic selection based on clinical risk factors and culture results, analgesia, wound care instructions, and follow-up for reassessment. Typical sites of service are the ambulatory surgical center, hospital outpatient department, or emergency department when urgent care is required.

Coding Specifications

Modifier	Description	When to Use
`11`	Office/Outpatient E/M or Visit	Use when the procedure is performed in the office or outpatient setting without additional unusual circumstances.

CPT 45020: Incision and Drainage of Supralevator/Pelvirectal/Retrorectal Abscess

CPT-45000-TRANSRECTAL-PELVIC-ABSCESS-DRAINAGE

CPT 45000: Transrectal Drainage of Pelvic Abscess

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Taxonomy Code	Specialty	Notes
`2080S0005X`	Colorectal Surgery	Specialists frequently perform incision and drainage of deep rectal or perirectal abscesses.
`207P00000X`	General Surgery	General surgeons commonly manage anorectal abscesses in the OR or ED setting.
`207L00000X`	Gastroenterology	Gastroenterologists may perform transanal drainage when diagnostic endoscopy and drainage are combined.
`208000000X`	Colon and Rectal Surgery (alternative)	Alternate taxonomy for providers focusing on anorectal disease.
`207Q00000X`	Family Medicine	In some outpatient settings with procedural scope, family physicians may perform simple incision and drainage.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`K61.0`	Abscess of anal and rectal regions	Primary diagnosis for submucosal rectal abscess requiring incision and drainage.
`K61.1`	Ischiorectal abscess	Common related deep perirectal abscess that may require drainage in the operating room.
`K61.2`	Intrasphincteric abscess	May present similarly and require internal drainage beneath the mucosa.
`K61.3`	Submucosal abscess of rectum	Directly describes the condition addressed by this procedure.
`K61.4`	Inter-sphincteric abscess	Relevant for planning drainage approach given sphincter involvement.
`K65.0`	Acute peritonitis	Included when abscess has led to intra-abdominal spread; alters management and site of service.
`R10.9`	Abdominal pain, unspecified	Symptom code that may accompany presentation and justify evaluation prior to procedure.
`B95.61`	Methicillin susceptible Staphylococcus aureus as the cause of diseases classified elsewhere	Potential microbiologic etiology relevant to culture results and antibiotic therapy.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`46040`	Drainage of perirectal abscess; simple or single	Perirectal abscess drainage is clinically related; may be used when abscess is located external to rectal mucosa rather than submucosal.
`46050`	Excision or drainage of perirectal abscess; complicated or deep	Used for more extensive perirectal abscesses requiring broader exploration than a submucosal rectal incision and drainage.
`46600`	Destruction or radical excision of lesion of anus with closure	Performed when concurrent debridement or excision of adjacent anorectal pathology is required.
`45320`	Anoscopy; simple	Diagnostic anoscopy often performed before or during drainage to localize lesion and assess extent.
`99152`	Moderate sedation services provided by the same physician performing the procedure	Coded when moderate sedation is provided by the physician in addition to the incision and drainage procedure.

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