CPT 97036Physical Therapy

App mdlty 1+hubbrd tnk ea 15

CPT code 97036 covers hydrotherapy treatment using a Hubbard tank, a specialized large whirlpool bath used to treat extensive burns, wounds, or conditions requiring full-body immersion therapy. Each 15-minute session of this therapeutic modality is billed separately.

Showing rates for

National Average

Base Medicare rate

$34.29

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

0.28

PE RVU (NF)

0.77

MP RVU

0.01

Total RVU

1.06

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

Loading bundling edits…

Billing tips

CPT 97036 is an untimed code representing a single 15-minute unit. Unlike timed codes subject to the 8-minute rule, you bill one unit per session regardless of duration, but treatment should reasonably approximate 15 minutes to avoid medical necessity challenges.
Impact: Improper unit billing (e.g., billing 2 units for 30 minutes) will trigger automatic denials and potential audit flags. Stick to one unit per session to maintain the $34.29 compliant reimbursement.
Document specific medical necessity for Hubbard tank versus conventional whirlpool (97022) or aquatic therapy (97113). Justify why full-body immersion is required rather than localized treatment.
Impact: Without clear differentiation, payers may downcode to 97022 ($21-26 range), resulting in $8-13 loss per session, or deny as not medically necessary
Hubbard tanks are considered largely obsolete by many payers due to infection control concerns and availability of alternative modalities. Verify payer-specific coverage policies before treatment.
Impact: Some Medicare contractors and commercial payers have local coverage determinations that exclude 97036 entirely, resulting in 100% denial regardless of documentation quality
Always append GP, GO, or GN modifier to identify the therapy discipline. Medicare requires these modifiers for all physical medicine codes to track therapy caps and process claims correctly.
Impact: Missing discipline modifiers result in automatic claim rejection; resubmission delays payment by 2-4 weeks and creates administrative costs of $3-8 per claim
Do not bill 97036 on the same day as 97113 (aquatic therapy) for the same body region without modifier 59 and exceptional documentation explaining the distinct therapeutic purpose of each modality.
Impact: CCI edits bundle these codes; without proper modifier use, the secondary code will deny at $34.29 loss, and overcoding flags may trigger comprehensive audits

Live Field Datano reports yet

Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.

Working with CPT 97036?

Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.

Help build the field knowledge

MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.

Related actions

Frequently asked questions

What is the Medicare reimbursement rate for CPT code 97036 in 2025?

The 2025 Medicare national average reimbursement rate for CPT code 97036 is $34.29 for both facility and non-facility settings. This rate is based on a Total RVU of 1.06 multiplied by the 2025 conversion factor of 32.3465. Actual payment may vary based on geographic locality adjustments.

How many units of 97036 can I bill per session?

CPT code 97036 is an untimed modality code, meaning you bill only one unit per treatment session regardless of duration. Unlike timed codes subject to the 8-minute rule, this code represents a single application of Hubbard tank therapy per encounter. Billing multiple units in one day will result in denials.

What is the difference between CPT 97036 and 97022?

CPT 97036 is specific to Hubbard tank therapy, which involves full-body immersion in a specialized large whirlpool tank. CPT 97022 covers application of whirlpool therapy to localized areas only. The key distinction is the extent of treatment area and equipment used—97036 requires specialized Hubbard tank equipment for whole-body treatment, while 97022 uses standard whirlpool for extremities or limited body regions.

Is CPT 97036 still covered by Medicare in 2025?

While CPT 97036 remains in the Medicare fee schedule with a rate of $34.29, many Medicare Administrative Contractors (MACs) have local coverage determinations that restrict or exclude Hubbard tank therapy due to limited clinical evidence and infection control concerns. Coverage varies by jurisdiction, so verify your specific MAC's LCD before providing services.

What modifiers are required when billing CPT 97036?

Medicare requires a therapy discipline modifier (GP for physical therapy, GO for occupational therapy, or GN for speech therapy) on all 97036 claims. Additional modifiers may include KX when exceeding therapy thresholds, 59 when billing with potentially bundled services, or 52 for reduced services. Missing the discipline modifier will cause claim rejection.

Can I bill CPT 97036 and 97113 on the same day?

Billing both 97036 (Hubbard tank) and 97113 (aquatic therapy) on the same day is problematic due to NCCI edits that consider these overlapping services. If both are medically necessary and distinct, you must append modifier 59 to the secondary code and provide exceptional documentation explaining why two different forms of water-based therapy were required for different therapeutic purposes.

What documentation do I need to support medical necessity for CPT 97036?

Medical necessity documentation should include: physician orders specifying Hubbard tank, extent of wounds/burns (body surface area percentage), justification for why conventional whirlpool is insufficient, treatment parameters (water temperature, duration), patient's response to therapy, objective measurements showing progress, and plan of care demonstrating how this modality addresses functional deficits. Document why less intensive alternatives are inadequate.