CPT 21510: Cortical Incision of Chest Bone for Decompression/Drainage

CPT code 21510 represents a surgical cortical incision of a chest bone to relieve pain, pressure, or infection from conditions such as osteomyelitis or bone abscess. Nationally, this code captures a focused surgical intervention used when conservative measures fail or when drainage and decompression of infected thoracic bone are clinically indicated. It is relevant across hospital, ambulatory surgery center, and specialty surgical practice settings where thoracic bone infections and abscesses are managed.

Key payers in the national analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find clinical context for when the procedure is used, common sites of service, and typical coding considerations for surgical bone decompression in the chest. The publication summarizes benchmark and coverage themes observed across major public and commercial payers, highlights policy and documentation points that commonly affect claim adjudication, and places the procedure in the context of surgical management of osteomyelitis and bone abscess.

The report is intended for coding professionals, surgical providers, and policy analysts seeking a concise reference on clinical purpose, payer coverage landscape, and operational considerations tied to CPT code 21510. Data not available in the input is noted where applicable.

Customize your policy alerts

Sign up for cpt 21510 policy alerts

Get alerted when payer policies referencing 21510 are released or updated.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Billing Code Overview

CPT code 21510 describes a surgical procedure in which the provider makes a deep incision through the cortex (outer shell) of a chest bone to relieve pain, pressure, or to drain infection such as osteomyelitis or a bone abscess. This procedure is a form of bone decompression and drainage.

Service type: Surgical incision of bone (decompression/drainage)
Typical site of service: Inpatient or outpatient surgical setting involving the chest wall or thoracic bones (operating room, ambulatory surgery center, or hospital surgical suite)

Data not available in the input.

Explore openpayer tools

View all tools

CPT 21510: Cortical Incision of Chest Bone for Decompression/Drainage

Customize your policy alerts

Sign up for cpt 21510 policy alerts

Get alerted when payer policies referencing 21510 are released or updated.

Monitor payer policy activity

Receive email alerts as soon as relevant payer policies are published or updated.

Billing Code Overview

Service type: Surgical incision of bone (decompression/drainage)
Typical site of service: Inpatient or outpatient surgical setting involving the chest wall or thoracic bones (operating room, ambulatory surgery center, or hospital surgical suite)

Data not available in the input.

Clinical & Coding Specifications

Clinical Context

A 58-year-old male with poorly controlled diabetes presents with progressive anterior chest wall pain, swelling, erythema, and intermittent drainage after a draining skin abscess. Imaging (CT chest) demonstrates a localized cortical bone lucency consistent with a rib osteomyelitis with adjacent subperiosteal abscess. The surgical team evaluates the patient for operative management. After preoperative antibiotics and surgical planning, the patient is taken to the operating room. Under general anesthesia and sterile technique, the surgeon exposes the affected rib, performs debridement of infected soft tissue, and makes a deep cortical incision (corticotomy) into the rib to evacuate pus and obtain bone cultures. Hemostasis is achieved, wound is irrigated, and a drain may be placed. Postoperative plan includes targeted intravenous antibiotics guided by culture results, wound care, and outpatient follow-up with infectious disease and thoracic or orthopedic surgery as indicated.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`11042`	Debridement, subcutaneous tissue, first 20 sq cm or less; simple, without undermining or extensive undermining	May be billed when concurrent soft-tissue debridement of the chest wall superficial layers is performed in addition to `21510`
`11043`	Debridement, muscle and/or fascia, first 20 sq cm or less	Applicable when deeper soft-tissue debridement of underlying muscle/fascia accompanies the cortical bone incision and drainage
`19020`	Drainage of breast abscess; open, complicated or with insertion of indwelling catheter	If the infected area involves the anterior chest and requires abscess drainage techniques similar to breast/chest wall drainage procedures
`11044`	Debridement, bone (includes cortical bone), first 20 sq cm	Used when more extensive bone debridement or sequestrectomy beyond a limited cortical incision is performed alongside or after `21510`
`11045`	Debridement, bone, each additional 20 sq cm (list separately in addition to code for primary procedure)	Billed in conjunction with `11044` when the debrided bone surface area exceeds the primary unit

Related Modifiers

9 rows

Modifier	Description	When to Use
22	Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…	- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
23	Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…	- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
26	Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…	- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
50	Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…	- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
51	Modifier –51 (Multiple Procedures) is used when the same provider performs multiple procedures in the same session to identify secondary, non‑exempt procedures and indicate payment reduction logic…	- Use modifier -51 when the same provider performs multiple distinct procedures during the same patient encounter: report the highest‑valued procedure first (no modifier) and append -51 to…
52	Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…	- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
53	Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…	- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
62	Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…	- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
78	CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…	- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
208100000X	Physical Medicine & Rehabilitation Physician	Physical medicine and rehabilitation, also referred to as rehabilitation medicine, is the medical specialty concerned with diagnosing, evaluating, and…
207L00000X	Anesthesiology Physician	An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
208000000X	Pediatrics Physician	A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
363A00000X	Physician Assistant	A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
2084D0003X	Diagnostic Neuroimaging (Psychiatry & Neurology) Physician	A licensed physician, who has completed a residency program in Neurology, and who has additional training, experience, and competence in the standards…
261QP2400X	Prison Health Clinic/Center	Ambulatory Health Care Facilities · Clinic/Center
111NN1001X	Nutrition Chiropractor	Chiropractic Nutrition is that specialty within the chiropractic profession that deals with the overall factors that affect the patient's ability to m…
2279P3800X	Palliative/Hospice Registered Respiratory Therapist	A coordinated plan of care to help dying patients and their families handle the burden of terminal care. Effective secretion management and relief of…

CPT 21501: Incision and Drainage of Deep Neck or Chest Tissue

CPT-21502-DEEP-NECK-CHEST-INCISION-DRAINAGE-WITH-RIB-RESECTION

CPT 21502: Deep Neck/Chest Incision and Drainage with Partial Rib Resection

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.

Explore openpayer tools

View all tools

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`11042`	Debridement, subcutaneous tissue, first 20 sq cm or less; simple, without undermining or extensive undermining	May be billed when concurrent soft-tissue debridement of the chest wall superficial layers is performed in addition to `21510`
`11043`	Debridement, muscle and/or fascia, first 20 sq cm or less	Applicable when deeper soft-tissue debridement of underlying muscle/fascia accompanies the cortical bone incision and drainage
`19020`	Drainage of breast abscess; open, complicated or with insertion of indwelling catheter	If the infected area involves the anterior chest and requires abscess drainage techniques similar to breast/chest wall drainage procedures
`11044`	Debridement, bone (includes cortical bone), first 20 sq cm	Used when more extensive bone debridement or sequestrectomy beyond a limited cortical incision is performed alongside or after `21510`
`11045`	Debridement, bone, each additional 20 sq cm (list separately in addition to code for primary procedure)	Billed in conjunction with `11044` when the debrided bone surface area exceeds the primary unit

Related Modifiers

9 rows

Modifier	Description	When to Use
22	Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…	- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
23	Modifier -23 (Unusual Anesthesia) is used on anesthesia service CPT codes when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia…	- Use modifier -23 only on anesthesia CPT codes (00100–01999) when a procedure that normally requires no anesthesia or only local anesthesia must be performed under general anesthesia because of…
26	Modifier 26 (Professional Component) identifies and bills only the professional portion of a split service — the physician’s interpretation, report, and medical judgment — when the technical…	- Use CPT Modifier -26 when you are billing only the professional component (PC) of a split‑bill eligible service—i.e., you performed the physician interpretation, medical judgment and prepared a…
50	Modifier –50 (Bilateral Procedure) is appended to a CPT code when an identical procedure is performed on paired anatomical structures during the same operative session. The AMA states to add…	- Use modifier -50 when the same CPT surgical, diagnostic, or radiology procedure is performed on paired anatomical structures (both sides of the body) during the same operative/session by the same…
51	Modifier –51 (Multiple Procedures) is used when the same provider performs multiple procedures in the same session to identify secondary, non‑exempt procedures and indicate payment reduction logic…	- Use modifier -51 when the same provider performs multiple distinct procedures during the same patient encounter: report the highest‑valued procedure first (no modifier) and append -51 to…
52	Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…	- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
53	Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…	- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…
62	Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…	- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
78	CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…	- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…

Related Provider Taxonomies

8 rows

Taxonomy Code	Specialty	Notes
208100000X	Physical Medicine & Rehabilitation Physician	Physical medicine and rehabilitation, also referred to as rehabilitation medicine, is the medical specialty concerned with diagnosing, evaluating, and…
207L00000X	Anesthesiology Physician	An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an opera…
208000000X	Pediatrics Physician	A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectru…
363A00000X	Physician Assistant	A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and…
2084D0003X	Diagnostic Neuroimaging (Psychiatry & Neurology) Physician	A licensed physician, who has completed a residency program in Neurology, and who has additional training, experience, and competence in the standards…
261QP2400X	Prison Health Clinic/Center	Ambulatory Health Care Facilities · Clinic/Center
111NN1001X	Nutrition Chiropractor	Chiropractic Nutrition is that specialty within the chiropractic profession that deals with the overall factors that affect the patient's ability to m…
2279P3800X	Palliative/Hospice Registered Respiratory Therapist	A coordinated plan of care to help dying patients and their families handle the burden of terminal care. Effective secretion management and relief of…

CPT 21501: Incision and Drainage of Deep Neck or Chest Tissue

CPT-21502-DEEP-NECK-CHEST-INCISION-DRAINAGE-WITH-RIB-RESECTION

CPT 21502: Deep Neck/Chest Incision and Drainage with Partial Rib Resection

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

OpenPayer

CPT 21510: Cortical Incision of Chest Bone for Decompression/Drainage

Sign up for cpt 21510 policy alerts

Billing Code Overview

OpenPayer

CPT 21510: Cortical Incision of Chest Bone for Decompression/Drainage

Sign up for cpt 21510 policy alerts

Billing Code Overview

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related Codes

References

Clinical & Coding Specifications

Clinical Context

Related CPT Codes

Related Modifiers

Related Provider Taxonomies

Related Codes

References