Aspiration and/or injection of a ganglion cyst, any anatomic location — one code covers both aspiration and injection when performed at the same encounter.

Verified May 8, 2026 · 5 sources ↓

Medicare: $67.80
Total RVUs: 2.03
Global, days: 0
Region: Other

Drawn from CMSAAPC

Documentation requirements

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

Source · Editorial brief grounded in 5 cited references ↓

Confirm cyst location by name (e.g., dorsal wrist, volar wrist, dorsal foot) — 'ganglion cyst' alone without anatomic specificity is insufficient.
State whether aspiration, injection, or both were performed, and document the volume of fluid aspirated if applicable.
Document the medication name, concentration, and dose injected; note any drug discarded from a single-use vial for JW modifier support.
If ultrasound guidance was used, a separate formal imaging report or real-time documentation must accompany the claim for 76942.
Record the clinical indication establishing medical necessity — symptomatic cyst causing pain or functional limitation.
Document laterality (left, right, or bilateral) to support modifier selection.

Applicable modifiers

Modifiers commonly billed with this code.

Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual

22 Increased complexity 25 Significant separate E/M 50 Bilateral procedure 51 Multiple procedures 59 Distinct service 76 Repeat, same physician 77 Repeat, another physician 78 Unplanned return — related 79 Unrelated during global LT Left side RT Right side XS Separate structure

What this code covers

Source · Editorial summary grounded in 5 cited references ↓

20612 covers needle-based treatment of a ganglion cyst: aspiration of cyst fluid, injection of medication (typically corticosteroid with or without local anesthetic), or both performed together. The code applies regardless of anatomic location — wrist, hand, foot, ankle, or elsewhere. If the provider aspirates and then injects during the same encounter, bill one unit of 20612, not two.

The global period is 000, meaning same-day E/M services require modifier 25 to survive bundling edits. Because 20612 does not bundle imaging guidance by code definition, ultrasound guidance (76942) can be reported separately if used and documented — but confirm with each payer, as some commercial contracts bundle it. Do not report local anesthesia administration (e.g., 64450) separately when it's used solely to facilitate the cyst procedure; NCCI treats that as integral.

Laterality modifiers matter here. Use LT or RT for unilateral procedures. For bilateral same-session treatment, Medicare requires modifier 50 on a single claim line; ASC billing follows a two-line format with LT and RT on separate lines. If drug is drawn from a single-use vial and a portion is discarded, document the discarded amount and report it on a separate line with modifier JW.

RVU & reimbursement

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

Source · CMS Physician Fee Schedule, RVU26A · January 2026

Work RVU	0.68
Practice expense RVU	1.26
Malpractice RVU	0.09
Total RVU	2.03
Medicare national rate	$67.80
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	$67.80
HOPD (APC 5441) Hospital outpatient department	$313.60
ASC (PI P3) Ambulatory surgical center (freestanding)	$42.30

Common denial reasons

The recurring reasons claims for CPT 20612 get rejected.

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

Bundling of same-day E/M without modifier 25 — 000 global means the office visit is denied unless modifier 25 is appended.
Missing or incorrect laterality modifier — payers applying NCCI edits flag 20612 claims without LT, RT, or 50.
Separate billing of local anesthetic injection (e.g., 64450) alongside 20612 — NCCI considers anesthesia for the procedure integral and denies the second code.
Ultrasound guidance (76942) denied when billed without payer-specific authorization or when documentation lacks a real-time image record.
Units of service greater than one when both aspiration and injection were performed — 20612 is one code regardless of how many needle actions occurred.

Frequently asked questions

Source · Generated from the editorial pipeline, verified against 5 cited references ↓

01If I aspirate the cyst and then inject it in the same visit, do I bill two units of 20612?

No. Bill one unit of 20612 regardless of how many needle actions were performed. The code covers aspiration and/or injection at a single encounter — combining both does not change the unit count.

02Can I bill an E/M on the same day as 20612?

Yes, but only with modifier 25 on the E/M. The 000 global period means the procedure itself carries no pre- or post-op work, so the visit is separately payable — but payers will bundle it without modifier 25.

03Is ultrasound guidance separately billable with 20612?

20612 does not include imaging guidance by code definition, so 76942 can be billed separately when used. Document real-time image acquisition and a formal report. Some commercial payers bundle it anyway — check your contracts before billing.

04How do I handle bilateral ganglion cyst treatment in the same session?

For Medicare Part B, append modifier 50 to a single 20612 line. For ASC claims, bill two lines — one with LT and one with RT. Private payer requirements vary; some follow the Medicare convention, others require two lines.

05Can I separately report a local anesthetic injection I gave before aspirating the cyst?

No. Local anesthesia administered to facilitate 20612 is integral to the procedure under NCCI policy and is not separately reportable. Billing 64450 alongside 20612 for that purpose will be denied.

06What modifier applies if I treat a ganglion cyst that recurred during the postoperative period of a different hand or wrist procedure?

Use modifier 79 if the ganglion cyst treatment is unrelated to the original procedure. Modifier 78 is reserved for an unplanned return for a related procedure — do not use it here unless the cyst is directly tied to the index surgery.

Sources & references

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

Mira AI Scribe

Mira's AI scribe captures cyst location, procedure type (aspiration, injection, or both), medication name and dose, laterality, and whether imaging guidance was used. That structured output prevents the two most common 20612 denials: missing laterality modifiers and unbundled same-day E/M visits lacking modifier 25.

See how Mira captures CPT 20612 documentation