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Official Description

Application of a modality to 1 or more areas; paraffin bath

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 97018 refers to the application of a modality specifically utilizing a paraffin bath on one or more areas of the body. A paraffin bath is a therapeutic treatment that involves immersing small, irregular surfaces such as the wrists, hands, and feet in melted paraffin wax. Paraffin is a mineral wax that is derived from petroleum and has a low melting point, typically ranging from 125 to 135 degrees Fahrenheit. This low melting point allows the wax to remain in a liquid state, enabling extended contact with the skin without posing a risk of thermal injury. The treatment is designed to provide moist heat, which can enhance blood circulation to the affected area and promote relaxation of muscle tissue. Paraffin baths are particularly beneficial for individuals experiencing acute or chronic pain and stiffness, as they can help alleviate discomfort and improve mobility. This modality is often employed prior to physical activities to reduce joint stiffness and enhance the range of motion. It is commonly indicated for patients suffering from conditions such as osteoarthritis, rheumatoid arthritis, fibromyalgia, and scleroderma. Additionally, paraffin baths may be utilized in the management of bursitis, tendonitis, and muscle sprains or strains, making it a versatile treatment option in therapeutic settings.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The paraffin bath treatment is indicated for various conditions that involve pain and stiffness in the extremities. The following are the explicitly provided indications for the use of a paraffin bath:

  • Osteoarthritis - A degenerative joint disease characterized by the breakdown of cartilage, leading to pain and stiffness.
  • Rheumatoid Conditions - Autoimmune disorders that cause chronic inflammation in the joints, resulting in pain and swelling.
  • Fibromyalgia - A condition marked by widespread musculoskeletal pain, fatigue, and tenderness in localized areas.
  • Scleroderma - A group of autoimmune diseases that cause the skin and connective tissues to harden and tighten, often leading to discomfort.
  • Bursitis - Inflammation of the bursae, the small fluid-filled sacs that cushion the bones, tendons, and muscles near joints, causing pain and swelling.
  • Tendonitis - Inflammation or irritation of a tendon, often resulting in pain and tenderness near a joint.
  • Muscle Sprains or Strains - Injuries to muscles or tendons that can cause pain, swelling, and limited mobility.

2. Procedure

The procedure for administering a paraffin bath involves several key steps to ensure effective treatment. The following outlines the procedural steps:

  • Step 1: Preparation of Paraffin - Begin by melting paraffin wax in a specialized paraffin bath unit. The wax should be heated to a temperature between 125 and 135 degrees Fahrenheit to ensure it is in a liquid state while remaining safe for skin contact.
  • Step 2: Patient Preparation - Prepare the patient by ensuring that the area to be treated is clean and dry. The patient should be positioned comfortably, allowing easy access to the extremities that will be immersed in the paraffin bath.
  • Step 3: Immersion - Once the paraffin is at the appropriate temperature, the patient’s extremity, such as a hand or foot, is carefully immersed into the melted paraffin. The immersion should be done slowly to prevent any thermal discomfort.
  • Step 4: Coating - After the initial immersion, the extremity may be removed briefly and then re-immersed several times to create a thick coating of paraffin. This layering helps to trap heat and moisture against the skin.
  • Step 5: Wrapping - Once the desired thickness is achieved, the coated extremity is wrapped in a plastic covering or towel to retain heat. This wrapping helps to prolong the therapeutic effects of the paraffin bath.
  • Step 6: Duration - The extremity is typically left wrapped for about 15 to 30 minutes, allowing the heat to penetrate the skin and provide relief from pain and stiffness.
  • Step 7: Removal - After the treatment duration, the paraffin is gently peeled off the skin, and any residual wax can be wiped away. The area may be massaged lightly to further enhance relaxation and circulation.

3. Post-Procedure

Post-procedure care following a paraffin bath is generally minimal, but there are some considerations to keep in mind. Patients may experience immediate relief from pain and stiffness, and it is advisable to allow the treated area to rest for a short period after the procedure. Patients should be monitored for any adverse reactions, such as redness or irritation, which may indicate sensitivity to the heat or wax. It is also recommended that patients engage in gentle range-of-motion exercises following the treatment to maximize the benefits of increased blood flow and muscle relaxation. Additionally, patients should be advised to keep the treated area moisturized to maintain skin health and prevent dryness. Regular follow-up treatments may be suggested based on the patient's condition and response to therapy.

Short Descr PARAFFIN BATH THERAPY
Medium Descr APPL MODALITY 1/> AREAS PARAFFIN BATH
Long Descr Application of a modality to 1 or more areas; paraffin bath
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 7 - Physical Therapy Service, for which Payment may not be Made
Multiple Procedures (51) 5 - Special payment adjustment rules on the RVU practice expense component of multiple therapy service applies...
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Service Paid under Fee Schedule or Payment System other than OPPS
Type of Service (TOS) 1 - Medical Care
Berenson-Eggers TOS (BETOS) P6C - Minor procedures - other (Medicare fee schedule)
MUE 1
CCS Clinical Classification 213 - Physical therapy exercises, manipulation, and other procedures
GO Services delivered under an outpatient occupational therapy plan of care
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
GP Services delivered under an outpatient physical therapy plan of care
KX Requirements specified in the medical policy have been met
CQ Outpatient physical therapy services furnished in whole or in part by a physical therapist assistant
CO Outpatient occupational therapy services furnished in whole or in part by an occupational therapy assistant
XU Unusual non-overlapping service, the use of a service that is distinct because it does not overlap usual components of the main service
97 Rehabilitative services: when a service or procedure that may be either habilitative or rehabilitative in nature is provided for rehabilitative purposes, the physician or other qualified health care professional may add modifier 97 to the service or procedure code to indicate that the service or procedure provided was a rehabilitative service. rehabilitative services help an individual keep, get back, or improve skills and functioning for daily living that have been lost or impaired because the individual was sick, hurt, or disabled.
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
XE Separate encounter, a service that is distinct because it occurred during a separate encounter
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
77 Repeat procedure by another physician or other qualified health care professional: it may be necessary to indicate that a basic procedure or service was repeated by another physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 77 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
25 Significant, separately identifiable evaluation and management service by the same physician or other qualified health care professional on the same day of the procedure or other service: it may be necessary to indicate that on the day a procedure or service identified by a cpt code was performed, the patient's condition required a significant, separately identifiable e/m service above and beyond the other service provided or beyond the usual preoperative and postoperative care associated with the procedure that was performed. a significant, separately identifiable e/m service is defined or substantiated by documentation that satisfies the relevant criteria for the respective e/m service to be reported (see evaluation and management services guidelines for instructions on determining level of e/m service). the e/m service may be prompted by the symptom or condition for which the procedure and/or service was provided. as such, different diagnoses are not required for reporting of the e/m services on the same date. this circumstance may be reported by adding modifier 25 to the appropriate level of e/m service. note: this modifier is not used to report an e/m service that resulted in a decision to perform surgery. see modifier 57 for significant, separately identifiable non-e/m services, see modifier 59.
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
55 Postoperative management only: when 1 physician or other qualified health care professional performed the postoperative management and another performed the surgical procedure, the postoperative component may be identified by adding modifier 55 to the usual procedure number.
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
95 Synchronous telemedicine service rendered via a real-time interactive audio and video telecommunications system: synchronous telemedicine service is defined as a real-time interaction between a physician or other qualified health care professional and a patient who is located at a distant site from the physician or other qualified health care professional. the totality of the communication of information exchanged between the physician or other qualified health care professional and the patient during the course of the synchronous telemedicine service must be of an amount and nature that would be sufficient to meet the key components and/or requirements of the same service when rendered via a face-to-face interaction. modifier 95 may only be appended to the services listed in appendix p. appendix p is the list of cpt codes for services that are typically performed face-to-face, but may be rendered via a real-time (synchronous) interactive audio and video telecommunications system.
F2 Left hand, third digit
GA Waiver of liability statement issued as required by payer policy, individual case
GW Service not related to the hospice patient's terminal condition
GX Notice of liability issued, voluntary under payer policy
LT Left side (used to identify procedures performed on the left side of the body)
Q5 Service furnished under a reciprocal billing arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
Q6 Service furnished under a fee-for-time compensation arrangement by a substitute physician or by a substitute physical therapist furnishing outpatient physical therapy services in a health professional shortage area, a medically underserved area, or a rural area
RT Right side (used to identify procedures performed on the right side of the body)
U5 Medicaid level of care 5, as defined by each state
XP Separate practitioner, a service that is distinct because it was performed by a different practitioner
Date
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Notes
2009-01-01 Changed Code description changed.
Pre-1990 Added Code added.
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