CPT code 38222 – Bone marrow aspiration and biopsy

Key takeaways

CPT code 38222 covers bone marrow aspiration and core biopsy at the same site in the same session, not either procedure alone.

Billing 38220 or 38221 alongside 38222 on the same date without modifier 59 and a distinct site violates NCCI bundling edits and triggers automatic denial.

Medicare facility and non-facility payment rates for 38222 differ substantially, and place of service is the single largest variable in reimbursement.

Pabau’s claims management software helps hematology practices track 38222 claims, flag denial patterns, and submit electronically via Claim.MD.

CPT code 38222: Quick reference

The table below summarizes the essential billing facts for CPT code 38222. Use this as your at-a-glance check before submitting a claim.

What CPT code 38222 covers: Procedure description

CPT code 38222 covers one combined procedure in which the clinician obtains two specimens at the same site during the same session. The first is a bone marrow aspirate, a liquid sample drawn by needle suction. The second is a core biopsy, a cylindrical plug of tissue removed with a trephine needle. Both specimen types must be obtained for 38222 to be the correct code.

The posterior iliac crest is the preferred site for most patients because the bone cortex is accessible and the specimen yield is generally consistent. The sternum is an alternative but is used less often in routine practice due to proximity to mediastinal structures.

Clinical indications that typically drive an order for this procedure include:

• Leukemia staging or workup (acute myeloid, acute lymphoblastic, chronic myeloid)
• Lymphoma staging (Hodgkin and non-Hodgkin)
• Multiple myeloma diagnosis and response assessment
• Myelodysplastic syndrome (MDS) evaluation
• Unexplained cytopenias (anemia, thrombocytopenia, neutropenia)
• Aplastic anemia diagnosis
• Suspected bone marrow infiltration by a solid tumor

The aspirate provides a cell suspension used for morphology, flow cytometry, cytogenetics, and molecular studies. The core biopsy preserves tissue architecture and is sent to pathology for histologic review. Both are needed for a complete hematologic diagnosis. That is why CPT created 38222 in 2018, so the combined procedure is reported with one code instead of 38220 and 38221 together.

38222 vs 38220 vs 38221: Key differences

Choosing between 38220, 38221 and 38222 is where bone marrow claims usually go wrong. Each code describes a distinct scope of work. Picking the wrong one, or billing two together without justification, is the fastest route to an NCCI edit denial.

The most common NCCI edit scenario: A coder sees two procedures documented (aspiration and biopsy) and bills both 38222 and 38221 on the same claim. Because 38222 already includes the biopsy, the pair trips an NCCI edit. It is denied unless modifier 59 and a separate site are both documented. Verify the current quarter’s NCCI table before assuming separability, as CMS updates edit pairs quarterly.

Every one of these decisions comes back to which specimens the procedure note confirms, and at which site.

Documentation requirements for CPT code 38222

Adequate documentation is the difference between a paid claim and a medical necessity denial. The procedure note must confirm every element below before a coder can confidently bill 38222. Using a structured superbill documentation checklist at the point of service reduces rework significantly.

• Both specimen types confirmed: The note must explicitly state that both an aspirate and a core biopsy were obtained, not just attempted.
• Anatomical site documented: Specify the exact site, such as “left posterior iliac crest.” Laterality matters when a payer requires the LT or RT modifier.
• Needle type and technique: Name the needle used for each specimen. An Illinois needle is typical for aspiration and a Jamshidi trephine needle for the core biopsy.
• Specimen disposition: Confirm the aspirate was sent for flow cytometry, cytogenetics, or morphology, and the core biopsy was submitted to pathology for histologic processing.
• Provider credentials: The performing provider’s name, credentials, and role must appear. Payer rules on which provider types may bill 38222 vary by state and plan.
• Clinical indication: Link the procedure to the working diagnosis that drove the order. That ICD-10 code must appear on the claim and be medically appropriate for the procedure.

If the aspirate was attempted but yielded a dry tap (no marrow obtained), document this explicitly. A dry tap changes the coding: If only the core biopsy was successfully obtained, 38221 is the correct code, not 38222.

Applicable modifiers for CPT code 38222

Modifier selection for CPT code 38222 depends on the service setting and the number of providers involved. It also turns on whether another bone marrow procedure took place at a distinct site on the same date.

Modifier 59 is the most commonly misapplied modifier on 38222 claims. Appending it tells the payer that two procedures took place at distinct sites, each with its own documentation. Applying modifier 59 without that separate site documentation exposes the practice to audit risk.

ICD-10 diagnosis codes that support CPT code 38222

The ICD-10-CM diagnosis code on a 38222 claim must establish medical necessity for the procedure. Unspecified codes raise denial risk because they give payers insufficient clinical rationale. According to the CMS ICD-10 coding guidelines, the diagnosis must be coded to the highest level of specificity available.

Local Coverage Determinations (LCDs) issued by Medicare Administrative Contractors (MACs) may restrict which ICD-10 codes support medical necessity for 38222 in a given region. Always verify the applicable MAC’s LCD before finalizing the diagnosis code selection.

Medicare reimbursement and fee schedule for CPT code 38222

Medicare payment for CPT code 38222 follows the Medicare Physician Fee Schedule (MPFS) and varies by place of service. In a physician office, the practice expense part of the relative value unit (RVU) is higher, so the total payment is higher. In a hospital or ambulatory surgery center, CMS pays the facility its practice expense separately, and the physician receives less.

Practices billing 38222 usually submit the claim electronically as an 837P file through a clearinghouse. The electronic remittance advice (ERA, or 835 file) that comes back confirms payment and lists any adjustment reason codes. Checking it against the fee schedule shows quickly whether a 38222 claim was short-paid.

For exact locality-adjusted rates, use the CMS Physician Fee Schedule lookup tool. The 2026 national non-facility rate for 38222 is approximately $160 to $200, and the facility rate approximately $90 to $120. Both figures vary by geographic locality and are revised annually with the MPFS update. Commercial payer rates are negotiated separately and may be substantially higher or lower.

Knowing these rates by setting lets practice managers set collection benchmarks for 38222 and spot where reimbursement falls short.

Prior authorization requirements for CPT 38222

Medicare Fee-for-Service generally does not require prior authorization for CPT code 38222. Medicare Advantage plans and most commercial payers, by contrast, frequently do. The requirement varies by plan and often by the setting where the procedure will be performed.

Running insurance eligibility verification before scheduling shows which plans require prior authorization (PA) for this code. Confirm PA status at least five business days before the procedure date.

When a PA is required, most payers want the following in the submission:

• The provisional or working diagnosis (with ICD-10-CM code) driving the procedure order
• Clinical notes documenting the symptoms, lab findings, or imaging that support the indication
• The ordering provider’s credentials and NPI
• The proposed site of service (office vs. outpatient hospital)
• Any relevant prior treatment history that led to this diagnostic step

PA denials for 38222 most often cite insufficient clinical documentation or a diagnosis code that does not meet the plan’s medical necessity criteria. Attaching the relevant clinical notes and lab results substantially improves approval rates. So does a clear statement of the diagnostic question the bone marrow procedure will answer.

Common claim denial reasons for CPT code 38222 and how to avoid them

The denials that recur on 38222 claims follow predictable patterns. Understanding the cause of each makes the corrective action straightforward. Logging every denial by cause and payer turns repeat rework into a pattern you can fix at the source.

Matching remittance data against medical billing denial codes shows whether 38222 denials stem from documentation, coding errors, or payer-specific policies. Tracking those patterns by payer tells hematology practices which accounts need attention before the next claim goes out. The most effective prevention is still a clean first submission, with every element verified before transmission.

Billing CPT code 38222 with image guidance (CPT 77012)

CT guidance (CPT 77012) may be separately reportable with CPT code 38222 when imaging is medically necessary to reach the biopsy site safely. The performing radiologist or physician must also document the image guidance separately. Payer policies on this pairing vary widely, so separate payment is never guaranteed.

For 77012 to be billed separately with 38222, most payers require all of the following:

• A separate radiology report documenting the image guidance
• A clinical rationale explaining why standard anatomical landmarks were insufficient (e.g. prior radiation changes, anatomical anomaly, morbid obesity)
• The interpreting physician’s separate attestation that imaging was used to guide needle placement
• Confirmation that the image guidance was not simply performed as a precaution but was clinically necessary for safe access

Some Medicare Administrative Contractors and commercial payers explicitly bundle 77012 with 38222 and will not pay them separately under any circumstances. Others allow separation with modifier 59 when the documentation requirements above are met. Always verify the applicable payer’s LCD or medical policy before billing 77012 alongside 38222. Asserting separability without verifying payer-specific policy is one of the faster ways to generate a targeted audit on hematology claims.

How claims management software protects 38222 reimbursement

The denials above start before the claim leaves the practice. An unchecked prior authorization, a note coded from memory, or a stray 38221 on the same claim each cost a resubmission.

Practice management software like Pabau keeps those checks in one place. In the US, Pabau connects to Claim.MD. From the same dashboard, your team can run real-time eligibility checks, submit claims electronically to thousands of payers, and track claim status.

Pabau also posts ERA remittances, so a short-paid 38222 claim surfaces as soon as the remittance arrives. With denial-reducing claims management, your billing team fixes the cause of a 38222 denial once, before it repeats on the next claim.

Track 38222 claims from submission to payment

Pabau’s claims management software connects hematology practices to Claim.MD for electronic 837P submission, real-time eligibility verification, and ERA reconciliation. See how it works for your practice.

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Conclusion

Coding 38222 correctly comes down to one question: What did the procedure note confirm? Code to the specimens that were obtained, not the procedure that was ordered, and a dry tap or a single specimen changes the code.

The trade-off worth remembering is modifier 59. It recovers payment for a separately documented second site, but on a single puncture it invites an audit. When the note is unclear, bill 38222 alone and fix the documentation template instead.

Checking eligibility and prior authorization before the procedure date removes most of the remaining denial risk. Book a demo to see how Pabau checks eligibility and tracks your 38222 claims from submission to payment.

Continue your research

Need to understand how claims clearinghouses fit into your billing workflow? Our medical claims clearinghouse guide explains how electronic claim routing works from practice to payer.

Looking to reduce claim rejection rates across all procedure codes? Credentialing with insurance companies covers the provider enrollment steps that prevent front-end claim rejections.

Weighing up Claim.MD as your clearinghouse? Our Claim.MD clearinghouse overview explains how it routes and tracks claims for US practices.

Want a structured approach to appealing denied 38222 claims? Denial management in healthcare sets out how to log, appeal, and prevent recurring denials.

Aiming for first-pass payment on every claim? What makes a clean claim lists the elements payers check before they pay.

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