22015

Open incision and drainage of a deep subfascial abscess along the posterior lumbar, sacral, or lumbosacral spine.

Verified May 8, 2026 · 7 sources ↓

Medicare: $921.86
Total RVUs: 27.6
Global, days: 90
Region: Spine

Drawn from MdclarityKzanowCMSAAPCOptumcoding

Documentation requirements

What must appear in the operative or office note to support the claim.

Source · Editorial brief grounded in 7 cited references ↓

Specify the depth of the abscess as subfascial — notes that document only 'wound infection' or 'superficial drainage' will not support 22015.
Identify the spinal region by name (lumbar, sacral, or lumbosacral) and document the anatomic levels involved.
Detail the operative steps: incision approach, layer-by-layer dissection, extent of irrigation, debridement performed, and wound closure method or drain/VAC placement.
If returning to the OR during a global period, document that the infection or abscess is a complication of (or unrelated to) the prior procedure — this drives modifier 78 vs. 79 selection.
For thoracolumbar cases spanning multiple regions, document which region received the majority of surgical work to justify single-code billing.
Record intraoperative cultures, antibiotic irrigation solutions used, and drain type if applicable.

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 51 Multiple procedures 59 Distinct service 78 Unplanned return — related 79 Unrelated during global 80 Assistant surgeon AS PA/NP/CNS assistant

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

CPT 22015 covers open surgical drainage of a deep (subfascial) abscess at the posterior lumbar, sacral, or lumbosacral spine. This is a high-complexity procedure performed under general or regional anesthesia, requiring formal incision, dissection through fascial layers, irrigation, and typically drain or wound-VAC placement. It is distinct from superficial wound drainage and from cervical/thoracic drainage, which falls under 22010.

The 90-day global period is a critical billing consideration. When 22015 is performed as a return to the OR after a prior spinal procedure—a common scenario given that postoperative wound infection is a leading indication—append modifier 78. That signals an unplanned return for a related complication during an existing global period and allows separate payment. If the infection is unrelated to the prior procedure, use modifier 79 instead. Do not append both; the distinction controls whether Medicare applies a reduced payment or allows full reimbursement.

When thoracolumbar pathology spans the T/L junction (e.g., T10–L5 irrigation and debridement), bill only one code—22010 or 22015—based on where the majority of the surgical work occurred. NCCI policy prohibits billing 22010 and 22015 together for a single operative session unless distinct, separate anatomic areas are treated. The operative note must clearly support the region of primary work if either code is challenged.

RVU & reimbursement

Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	12.32
Practice expense RVU	11.66
Malpractice RVU	3.62
Total RVU	27.6
Medicare national rate	$921.86
Global period	90 days

Payment by site of service

Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.

Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026

Setting	Medicare rate (national)
Office (PFS non-facility) Procedure performed in physician's office	$921.86
HOPD (APC 5114) Hospital outpatient department	$7,413.38
ASC (PI G2) Ambulatory surgical center (freestanding)	$3,695.53

Common denial reasons

The recurring reasons claims for CPT 22015 get rejected.

Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓

Missing subfascial depth documentation — payers downcode to a superficial drainage code or deny outright when the operative note lacks layer-specific dissection language.
Modifier 78 or 79 absent or inverted when 22015 is billed during an active global period from a prior spinal procedure, triggering a global period bundling denial.
Billing 22015 and 22010 together for a single operative session without distinct anatomic site documentation, which NCCI bundles without a valid modifier.
ICD-10 diagnosis code mismatch — using a general wound infection code rather than a postoperative complication code (e.g., T81.4xx series) when the context clearly indicates a surgical site infection.
Insufficient operative note specificity — audit reviewers flag notes that describe 'inspection and irrigation' without documented incision, dissection, and drainage of a discrete abscess cavity.

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 7 cited references ↓

01Can 22015 and 22010 be billed together on the same operative session?

No. NCCI bundles 22010 and 22015 for the same session. When the abscess spans the thoracolumbar junction, bill only the code for the region where the majority of surgical work was performed. Document that determination explicitly in the operative note.

02Which modifier applies when 22015 is performed after a recent spinal fusion for a wound infection?

Use modifier 78. The wound infection is a complication related to the prior procedure, making this an unplanned return to the OR for a related procedure during the global period. Modifier 79 applies only when the new procedure is unrelated to the original surgery.

03Does wound-VAC placement get billed separately with 22015?

Only if the operative note clearly supports a distinct, separately billable service. AAPC forum guidance and coding discussions indicate that if the note documents only wound-VAC application without a formal incision and drainage of an abscess cavity, the wound-VAC code (97605/97607) may be the only supportable code. Both require complete documentation of their individual components.

04What ICD-10 codes pair correctly with 22015 for postoperative spinal abscess?

For infections following a prior spinal procedure, the T81.4xx series (infection following a procedure) with an appropriate laterality and encounter extension is the standard pairing. Using a generic M46 (spinal infection) code without linking it to the postoperative context can trigger a mismatch denial. Confirm with your payer's LCD if one exists for spinal infections.

05Is 22015 typically performed in an ASC or inpatient setting?

Inpatient hospital (POS 21) is the most common site of service given the acuity — patients with deep spinal abscesses are frequently admitted. The code is payable in an HOPD or ASC setting but the majority of billing reflects inpatient cases. Site of service affects facility payment; see the site of service comparison table for HOPD vs. ASC rates.

06When is modifier 22 appropriate for 22015?

Use modifier 22 when the work is substantially greater than the typical case — for example, an abscess with extensive multilevel involvement, multiple loculations requiring separate drainage, or unusual anatomic complexity from prior surgery. The operative note must quantify why the work exceeded the norm; a generic statement of difficulty will not survive audit.

Sources & references

Editorial content was developed using the following public sources. Last verified May 8, 2026.

Mira AI Scribe

Mira's AI scribe captures the abscess depth (subfascial), spinal region (lumbar/sacral/lumbosacral), anatomic levels involved, layer-by-layer operative description, irrigation details, and drain or wound-VAC placement directly from dictation. It also flags when the case occurs during an active global period so the coder is prompted to confirm modifier 78 (related complication) or 79 (unrelated procedure) before the claim drops — preventing the most common denial reason for this code.

See how Mira captures CPT 22015 documentation