Injection of contrast material into the ankle joint to enable arthrographic imaging; the injection procedure component only, reported separately from the radiologic supervision and interpretation.

Verified May 8, 2026 · 8 sources ↓

Medicare: $206.75
Total RVUs: 6.19
Global, days: 0
Region: Foot & ankle

Drawn from CMSAAPCFindacodeMdclarityAoassn

Documentation requirements

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

Source · Editorial brief grounded in 8 cited references ↓

Clinical indication documenting why arthrography is necessary over standard imaging
Specific joint accessed — ankle joint, not subtalar or other adjacent joint
Type and volume of contrast material injected
Laterality explicitly stated (left, right, or bilateral)
If fluoroscopic guidance used, permanent images captured and referenced in the note
Provider role documented if splitting 27648 from 73615 across specialties

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 50 Bilateral procedure 52 Reduced services 59 Distinct service 76 Repeat, same physician 77 Repeat, another physician LT Left side RT Right side

What this code covers

Source · Editorial summary grounded in 8 cited references ↓

CPT 27648 covers the injection of contrast agent into the ankle joint as preparation for arthrography. The code represents the procedural work of accessing the joint and introducing contrast — not the imaging itself. Radiologic supervision and interpretation are reported separately, typically with 73615 (ankle arthrography, radiologic S&I). If fluoroscopic guidance is used to place the needle, that guidance code is also reported separately and must be documented with permanent images.

The code falls under the leg, tibia/fibula, and ankle injection procedures subsection of the musculoskeletal CPT range. It carries a 000-day global period, meaning no post-procedure care is bundled. Billing 27648 without the companion imaging code is common and appropriate when a radiologist handles the S&I portion separately — each provider bills only the portion they performed.

Side-specific modifiers LT and RT are expected on virtually every claim; missing them is a straightforward denial trigger. If both ankles are injected in the same session, modifier 50 applies. Arthrography is typically performed to evaluate ligamentous integrity, osteochondral lesions, or joint instability when non-contrast imaging is inconclusive.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	0.94
Practice expense RVU	5.11
Malpractice RVU	0.14
Total RVU	6.19
Medicare national rate	$206.75
Global period	0 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	$206.75

Common denial reasons

The recurring reasons claims for CPT 27648 get rejected.

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

Missing laterality modifier — LT or RT absent on the claim
27648 billed without a paired imaging code or without documentation that imaging was performed separately
Lack of medical necessity documentation when non-contrast imaging was not attempted first
Fluoroscopic guidance billed without documentation of permanent image acquisition
Incorrect joint specified — subtalar arthrography is coded differently and 27648 does not cover it

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 8 cited references ↓

01Do I bill 27648 and 73615 together?

Yes, if one provider performs both the injection and the radiologic supervision and interpretation. If a radiologist reads the images separately, each provider bills only their portion — 27648 for the injection, 73615 with modifier 26 for the S&I.

02Is fluoroscopic guidance bundled into 27648?

No. Fluoroscopic guidance (typically 77002) is not included in 27648 and must be reported separately when used. Document permanent images — payers deny the guidance code without that confirmation in the record.

03What modifier do I use for a bilateral ankle arthrogram in the same session?

Modifier 50. Bill 27648-50 on one line. Some payers want two lines with LT and RT instead — verify your payer's bilateral billing preference before submitting.

04Can 27648 be billed the same day as a therapeutic ankle injection (e.g., 20605)?

Only if performed on a distinct joint or distinct session with clear documentation. NCCI edits may apply. Append modifier 59 if the services are genuinely separate and document why both were medically necessary on the same date.

05What is the global period for 27648?

000 days. No post-procedure care is bundled. An E/M visit on the same day for a separate problem is still billable with modifier 25, though the arthrogram itself has no bundled follow-up.

06Does 27648 cover subtalar joint arthrography?

No. 27648 is specific to the ankle joint. Subtalar arthrography requires a different code. Document the joint accessed precisely — audit reviewers flag operative notes that use vague anatomic language.

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 joint accessed, contrast agent and volume, laterality, needle placement technique, and whether fluoroscopic guidance was used with permanent image documentation. This prevents the two most common denials for 27648: missing laterality and undocumented guidance — both of which are claim-level edits that don't survive adjudication without explicit note support.

See how Mira captures CPT 27648 documentation