Aspiration and/or injection of an intermediate joint or bursa — such as the wrist, elbow, ankle, acromioclavicular joint, or olecranon bursa — performed without ultrasound guidance.

Verified May 8, 2026 · 7 sources ↓

Medicare: $57.12
Total RVUs: 1.71
Global, days: 0
Region: Other

Drawn from CMSAAPCCmadocsPayerpriceMedibillmd

Documentation requirements

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

Source · Editorial brief grounded in 7 cited references ↓

Identify the specific joint or bursa treated by name (e.g., right wrist, olecranon bursa, left acromioclavicular joint) — 'intermediate joint' alone is insufficient.
State whether the procedure was aspiration, injection, or both, and document the agent injected if applicable (corticosteroid name and dose, hyaluronic acid, anesthetic).
Confirm that ultrasound guidance was NOT used; if guidance was employed, the note must specify the modality (fluoroscopy, CT, MRI) to support any separately billed guidance code.
Document the medical necessity — diagnosis driving the procedure (e.g., inflammatory arthritis, gout, bursitis, joint effusion) with a corresponding ICD-10 code.
Record laterality for all paired joints so modifier LT or RT can be applied accurately.
If an E/M is billed same-day with modifier 25, the note must contain a separately identifiable history, exam, and medical decision-making section distinct from the injection documentation.

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

25 Significant separate E/M 50 Bilateral procedure 51 Multiple procedures 59 Distinct service LT Left side RT Right side 76 Repeat, same physician 77 Repeat, another physician 79 Unrelated during global 22 Increased complexity 24 Unrelated E/M during global

What this code covers

Source · Editorial summary grounded in 7 cited references ↓

20605 covers arthrocentesis of intermediate-sized joints and bursae performed without ultrasound guidance. Intermediate joints include the wrist, elbow, ankle, acromioclavicular joint, temporomandibular joint, and olecranon bursa. The procedure may involve fluid aspiration, therapeutic injection (corticosteroid, hyaluronic acid, anesthetic), or both in a single encounter. The code does not distinguish between aspiration-only and injection-only — either or both are captured under 20605.

If ultrasound guidance is used, the correct code is 20606, not 20605. Fluoroscopic, CT, or MRI guidance can still be billed separately alongside 20605 — those modalities do not collapse into the injection code the way ultrasound guidance does. Each intermediate joint treated counts as one unit; billing multiple units for multiple joints in the same session requires separate line items with appropriate modifiers, not stacked units of 20605.

The global period is 000, meaning no pre- or post-operative care is bundled. An E/M on the same date is separately billable only when it is significant and independently documented — append modifier 25. The decision to perform the injection is included in the procedure payment and does not support a standalone E/M charge.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	0.66
Practice expense RVU	0.97
Malpractice RVU	0.08
Total RVU	1.71
Medicare national rate	$57.12
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	$57.12
HOPD (APC 5441) Hospital outpatient department	$313.60
ASC (PI P3) Ambulatory surgical center (freestanding)	$32.56

Common denial reasons

The recurring reasons claims for CPT 20605 get rejected.

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

Wrong code selected: wrist/elbow/ankle injected but biller used small-joint 20600 or large-joint 20610 — joint size classification must match the code.
Ultrasound guidance performed and documented but 20605 billed instead of 20606, triggering a mismatch between the operative note and the claim.
Same-day E/M denied because modifier 25 was omitted or the note did not contain documentation independent of the injection pre-service assessment.
Multiple units of 20605 billed for multiple joints in the same session without separate line items and laterality or distinct procedural modifiers.
Fluoroscopic guidance code 77002 denied when billed alongside 20605 because payer bundled it — requires appeal citing that only ultrasound guidance is integral; fluoroscopy is separately reportable.

Frequently asked questions

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

01What joints does 20605 cover versus 20600 and 20610?

20605 is for intermediate joints: wrist, elbow, ankle, acromioclavicular, temporomandibular, and the olecranon bursa. Small joints (fingers, toes) are 20600. Major joints (shoulder, hip, knee, subacromial bursa) are 20610. Picking the wrong tier is one of the most common coding errors on joint injections.

02If I aspirate fluid and then inject a steroid in the same visit, do I bill two units of 20605?

No. One unit of 20605 covers aspiration, injection, or both performed at the same joint in the same session. Billing two units for a combined aspiration-and-injection will trigger a MUE edit.

03Can I bill 20605 and 20610 on the same date for different joints?

Yes. If you inject an intermediate joint (e.g., wrist) and a major joint (e.g., knee) at the same encounter, bill both codes on separate lines with the appropriate LT/RT or 59 modifier to identify them as distinct procedural services.

04When does ultrasound guidance change the code?

Any time real-time ultrasound is used to guide needle placement and is permanently recorded and reported, use 20606 instead of 20605. You cannot bill 20605 plus a separate ultrasound guidance code — the guidance is built into 20606. Fluoroscopy (77002), CT (77012), and MRI guidance remain separately reportable alongside 20605.

05Is modifier 50 appropriate if I inject both wrists at the same visit?

Modifier 50 can be used for bilateral same-session injection of the same joint type. Some payers prefer two line items with LT and RT instead. Verify the payer's bilateral billing preference before submitting — Medicare typically wants the 50 modifier on a single line.

06The global period is 000 — does that mean I can bill an E/M the same day without any modifier?

No. A 000-day global only means there is no bundled post-op period. A same-day E/M still requires modifier 25 to be paid separately, and the note must document a significant, independently identifiable service beyond the decision to perform the injection.

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 name and side, procedure type (aspiration, injection, or both), agent and dose injected, and explicit confirmation that no ultrasound guidance was used — directly from dictation. That prevents the two most common 20605 audit flags: an unspecified joint site and a missing guidance attestation that forces a code-selection review.

See how Mira captures CPT 20605 documentation