A claim goes out with 98940 and 97140 on the same day. It comes back denied. The reason says the second code is bundled.
Your biller adds modifier 59 and resubmits. It gets paid. So the team starts adding 59 to every 97140 claim.
That habit feels like a fix. It is also one of the fastest ways to draw a payer’s attention. Reviewers run reports on modifier use. A practice that appends 59 to nearly every manual therapy claim stands out.
This guide shows how to bill therapy add-ons the right way. You will see how 97140, 97110, and 97112 relate to chiropractic manipulation. You will also see how NCCI edits work, when modifier 59 or XS is justified, and how the 8-minute rule turns minutes into units. A bundling matrix and a timed-code table will help you make quick, defensible decisions.
This article is general education. It is not legal or coding advice. Payer rules and edit tables change often. Confirm current policies before you bill.
The Short Answer: Can You Bill 97140 and 98940 Together?
Sometimes. It depends on the payer, the body region, and the documentation.
Here are the main points:
- Medicare does not cover therapy services such as 97140, 97110, or 97112 when a chiropractor provides them. Medicare covers spinal chiropractic manipulation only.
- Many commercial payers do cover therapy add-ons. Their rules vary.
- NCCI edits bundle 97140 with chiropractic manipulation when both treat the same region.
- Modifier 59 or XS may apply when manual therapy treats a separate anatomic region and the record proves it.
- Timed codes need documented minutes.
A modifier does not fix a weak chart. It only tells the payer that something distinct happened. The note must show it.
Know the Codes First
Clear definitions prevent most errors. Start here.
Chiropractic Manipulative Treatment: 98940, 98941, 98942
These codes describe manipulation of the spine. The code depends on the number of spinal regions treated.
- 98940: One to two regions
- 98941: Three to four regions
- 98942: Five regions
The five spinal regions are cervical, thoracic, lumbar, sacral, and pelvic. These codes are not timed. Minutes spent on manipulation do not count toward timed codes.
For help choosing among them, read this guide on CPT 98940 vs 98941 vs 98942.
97140: Manual Therapy
CPT 97140 covers manual therapy techniques. Examples include mobilization, manipulation of soft tissue, and manual traction. It is billed in 15-minute units with direct one-on-one contact.
The same hands-on nature is why 97140 overlaps with chiropractic manipulation. Payers want to know that the therapy is not just a second description of the same work.
97110: Therapeutic Exercise
CPT 97110 covers exercises to build strength, endurance, flexibility, or range of motion. It is also a 15-minute timed code. A provider must work directly with the patient. Time the patient spends exercising alone does not count.
97112: Neuromuscular Reeducation
CPT 97112 covers movement, balance, coordination, posture, and proprioception training. It is another 15-minute code. It fits patients with documented deficits in these areas. It is not a general stretching code.
Why the Differences Matter
CMT is untimed and bundles the pre-manipulation assessment. The therapy codes are timed and need minutes. Mixing the two without clear notes is where practices get into trouble.
Medicare vs Commercial Payers: Who Pays for Add-Ons?
Coverage comes before coding. If a payer does not cover a service, no modifier will change that.
Medicare
Medicare covers chiropractic manipulation of the spine to correct a subluxation. It does not cover other services provided by a chiropractor. That includes therapeutic exercise, neuromuscular reeducation, manual therapy, and massage.
Adding modifier 59 to a 97140 claim to Medicare does not make it payable. It may also create a compliance problem. Check with your MAC and your attorney on how to handle non-covered services. Notices such as the Advance Beneficiary Notice (ABN) may apply in some cases.
If you bill Medicare, you also need the AT modifier on CMT claims when care is active and corrective. For more detail, read this guide on chiropractic modifier AT and Medicare billing.
Commercial Plans and Medicare Advantage
Private payers write their own rules. Some cover therapy codes. Some require authorization. Some limit visits or units. Some bundle 97140 with CMT every time.
Check these points with each payer:
- Does the plan cover 97110, 97112, and 97140 for chiropractors?
- Is a referral or authorization required?
- Are there visit or unit limits?
- Does the plan require the GP modifier on therapy codes?
- Does the plan follow NCCI edits or use its own bundling logic?
- Does the plan prefer modifier 59 or the X modifiers?
Scope of Practice
State law decides what chiropractors may do. Some states allow exercise and rehabilitation. Others limit it. Confirm your state board’s rules and your malpractice carrier’s coverage before you build a therapy program.
How NCCI Edits Work
The National Correct Coding Initiative (NCCI) is a CMS program. It exists to stop improper payment for code pairs that should not be billed together. Many private payers follow NCCI logic too.
Procedure-to-Procedure Edits
A procedure-to-procedure (PTP) edit lists two codes. One is column 1. The other is column 2. If a provider bills both for the same patient, same provider, and same date, the payer pays the column 1 code and denies column 2.
Modifier Indicators
Each edit has a modifier indicator.
- 0: No modifier can bypass the edit.
- 1: A modifier may bypass the edit when the clinical facts support it.
- 9: The edit is not active.
An indicator of 1 does not mean the modifier is free to use. It means the modifier is allowed when the record supports separate services.
Medically Unlikely Edits
Medically Unlikely Edits (MUEs) set a limit on units per day for a code. They help catch billing errors. Check current MUE values before you bill several units of a timed code.
The NCCI Policy Manual
CMS publishes the NCCI Policy Manual. Its medicine chapter covers chiropractic manipulation and related services. The manual explains the same-region rule for 97140. Read it directly. Do not rely on summaries alone.
Edits Change Quarterly
CMS updates NCCI tables each quarter. A pair that was allowed last quarter may change. Build a habit of checking the current tables or using a claim scrubber that updates them.
Why 97140 Gets Bundled With Chiropractic Manipulation
NCCI treats manual therapy performed on the same region as CMT as part of the manipulation service. The reason is simple. Both involve hands-on work on the same area. Paying twice would be paying twice for the same work.
The edit has an exception. Manual therapy in a separate anatomic region may be reported with a modifier if the documentation supports it.
For example, a provider manipulates the lumbar spine. In the same visit, the provider performs manual therapy to the shoulder. Those are different regions. A modifier may be justified.
A provider manipulates the lumbar spine and then performs soft tissue work on the lumbar muscles. That is the same region. The soft tissue work is usually bundled into CMT. A modifier is not justified.
Spinal and Extraspinal Regions
Spinal regions for CMT are cervical, thoracic, lumbar, sacral, and pelvic. Extraspinal regions include the head, lower extremities, upper extremities, rib cage, and abdomen. Extraspinal manipulation uses CPT 98943. Medicare does not cover it.
Be clear in your notes about which region each service treated.
Modifier 59 and the X Modifiers
Modifier 59 means distinct procedural service. It tells the payer that two services are separate and should both be paid.
Why Payers Watch Modifier 59
Modifier 59 bypasses edits. Because of that, CMS and OIG have treated it as a high-risk modifier. OIG has reviewed its use and found improper use in a meaningful share of claims. Many payers run reports on it.
CMS describes modifier 59 as a modifier of last resort. If a more specific modifier fits, use that instead.
The X Modifiers
CMS created four X modifiers to give more detail:
- XE: Separate encounter
- XS: Separate structure, such as a separate organ or region
- XP: Separate practitioner
- XU: Unusual non-overlapping service
For 97140 with CMT in a separate region, XS fits well. Some payers require XS. Some still prefer 59. Some accept either. Check each payer’s policy and use only one of them on a line.
What a Modifier Can and Cannot Do
A modifier can show that services were distinct. It cannot create medical necessity. It cannot make a non-covered service covered. It cannot repair missing notes.
Bundling Edit Matrix: When Modifier 59 or XS Is Justified
Use this table as a quick guide. It is a general reference and not a replacement for current edit tables or payer policy.
| Same-Day Scenario | Typical Bundling Concern | Is Modifier 59 or XS Justified? |
|---|---|---|
| CMT of the lumbar spine plus 97140 to the lumbar spine | Same region. 97140 is generally bundled with CMT. | No. Do not add a modifier. |
| CMT of the cervical and thoracic spine plus 97140 to the thoracic muscles | Same region as part of CMT. | No. The therapy overlaps the manipulated region. |
| CMT of the lumbar spine plus 97140 to the shoulder | Separate anatomic regions. | Yes, if notes show the shoulder, the technique, and the minutes. Prefer XS if the payer accepts it. |
| CMT of the cervical spine plus 97140 to the knee | Separate anatomic regions. | Yes, with documentation of a separate diagnosis and goal. |
| CMT plus 97110 for core strengthening | Often no edit with CMT, but payers vary. | Not needed unless an edit exists. If one applies, use a modifier only if the service is distinct and timed. |
| CMT plus 97112 for balance training | Often no edit with CMT, but payers vary. | Not needed unless an edit exists. Document the neuromuscular deficit and minutes. |
| CMT in the morning plus 97140 to the same region in a later separate session | Same region, separate encounter. | Possible with XE or 59 if the sessions were truly separate and documented. Expect close review. |
| Any 97110, 97112, or 97140 billed to Medicare by a chiropractor | Medicare does not cover these services for chiropractors. | No. A modifier will not make it payable. |
Always check the current NCCI table for the exact pair. Edit status can differ by code pair and by quarter.
Step-by-Step: Should You Add a Modifier?
Walk through these steps every time.
- Confirm coverage. Does this payer cover the therapy code for your provider type?
- Check the edit. Is there a current NCCI or payer edit between the codes billed?
- Check the modifier indicator. If it is 0, no modifier can bypass the edit.
- Check the region. Did the therapy treat a different anatomic region from the CMT?
- Check the time. Is the therapy time documented, separate, and one-on-one?
- Check the necessity. Does the note show a diagnosis, a goal, and a skilled need?
- Pick the right modifier. Use XS or another X modifier if the payer accepts it. Use 59 if not.
- Link the diagnosis. Point each code to the diagnosis that supports it.
- Record the reason. Add a short note that explains why the service was separate.
If any step fails, do not add the modifier. Fix the issue or bill only what is supported.
The 8-Minute Rule for Timed Codes
The 97 codes in this article are timed. They are billed in units of 15 minutes. The 8-minute rule tells you how many units you can bill.
How the Rule Works
CMS uses this method for Medicare outpatient therapy services. You add the total minutes of all timed services provided that day. That total decides the number of units.
| Total Timed Minutes | Units You Can Bill |
|---|---|
| 8 to 22 minutes | 1 unit |
| 23 to 37 minutes | 2 units |
| 38 to 52 minutes | 3 units |
| 53 to 67 minutes | 4 units |
For longer sessions, add one unit for each additional 15 minutes, using the same pattern.
What Counts as Time
Only direct, one-on-one time counts. Do not include:
- Time spent on the CMT itself
- Rest breaks
- Time spent waiting for equipment
- Unsupervised exercise time
- Documentation time
CMT is untimed. Its minutes do not add to the timed total.
Example One
A provider performs 97140 for 12 minutes and 97110 for 10 minutes. The total is 22 minutes. That equals one unit under the CMS method. The unit goes to the service with more minutes, which is 97140.
Example Two
A provider performs 97140 for 15 minutes, 97110 for 15 minutes, and 97112 for 8 minutes. The total is 38 minutes. That equals three units. One unit goes to each code.
CMS Method vs Other Methods
Some payers use a different method. The AMA approach looks at each code on its own. A unit may be billed when a service reaches the midpoint, which is 8 minutes. Under this method, the same 22 minutes in Example One could produce two units, since each service passed 8 minutes.
Check which method each payer uses. Do not assume one method fits all.
Common Time Errors
- Billing units with no minutes recorded
- Recording the same minutes every visit
- Counting CMT time as therapy time
- Billing more units than total minutes support
- Counting unsupervised time on a machine or table
Documentation Checklist for Therapy Add-Ons
Reviewers read the chart first. Build notes that stand on their own.
For Every Timed Code
- Date of service
- Region treated
- Technique or exercise performed
- Minutes for each code, or total timed minutes
- Provider’s direct involvement
- Patient’s response
For Medical Necessity
- Diagnosis tied to the therapy
- Objective findings, such as range of motion or strength
- Functional limits, such as lifting or walking
- Measurable goals with timeframes
- Outcome tools, such as the Oswestry Disability Index or Neck Disability Index
- Progress notes and re-evaluation dates
- Changes to the plan if the patient is not improving
For Separate Regions
- A clear statement of the region treated with manual therapy
- The reason for treating that region
- Findings that justify the service
- Proof that it differs from the region adjusted
For Signatures and Dates
Every entry needs a signature and date. Late entries should be labeled as late and dated when written. Do not backdate.
Medical Necessity for 97110 and 97112
Payers may deny therapy codes that look routine. Show why each service was needed.
97110: Therapeutic Exercise
Link the exercises to a measured deficit. For example, a patient with reduced lumbar extension strength and trouble lifting groceries has a clear functional need. List the exercises, sets, and goals. Update them as the patient improves.
General warm-up time or stretching with no skilled input does not support 97110.
97112: Neuromuscular Reeducation
Link the service to a documented deficit in balance, coordination, posture, or proprioception. Show the exercises and how they address the deficit. A patient who falls or reports unsteadiness after an injury is a clear example.
Avoid Template Drift
Templates save time. They also create identical notes. If every patient receives 97110, 97112, and 97140 for the same minutes, payers will notice. Individualize each note. Bill only what the patient received.
Red Flags That Draw Audits
These patterns do not prove misuse. They tell reviewers where to look.
- Modifier 59 or XS on nearly every 97140 claim
- 97140 billed on the same region as CMT with a modifier
- Three or four units of therapy on every visit
- Identical minutes across patients
- No minutes in the notes
- Therapy billed for visits where the patient used equipment alone
- Billing 97112 with no neuromuscular diagnosis
- High volumes of therapy for a small share of the patients
- Therapy billed to Medicare under another code
- Notes that look cloned across visits
Compare your own claims to this list each month.
Let’s Check Some Real Scenario
One: The Automatic 59
A practice adds 59 to every 97140 claim. A commercial payer runs a data report. The practice shows modifier 59 on nearly all 97140 lines. The payer requests records. Many notes show lumbar manual therapy after lumbar CMT. Those claims are denied and the practice must repay them.
Two: A Clean Separate Region
A patient has low back pain and shoulder pain. The provider performs CMT on the lumbar spine and 97140 on the shoulder for 15 minutes. The note lists both diagnoses, the technique, the minutes, and the goal. The claim uses XS on 97140. It is paid.
Three: Minutes That Do Not Add Up
A note shows 97110 and 97140, each billed for two units. The record shows only 20 minutes of therapy time in total. That supports one unit under the CMS method. The extra units are overbilled.
Scenario Four: The Medicare Patient
A Medicare patient receives CMT and therapeutic exercise from a chiropractor. The practice bills 97110. It is denied as non-covered. Staff add modifiers and resubmit. They are denied again. The practice should have reviewed coverage first and used proper patient notice where it applied.
Common Denial Reasons and Fixes
- Bundled with CMT: Check the region. Add a modifier only if the service was separate and documented.
- Missing modifier: If the service was distinct, add the right modifier. Do not guess.
- Units exceed time: Review minutes and apply the correct unit method.
- No medical necessity: Add objective findings, goals, and outcome tools next time.
- Not covered: Confirm policy before billing. Do not rebill under another code to force payment.
- Missing GP or other required modifier: Review payer policy.
- Authorization missing: Verify before treatment.
Before you resubmit any denied claim, compare the denial reason with the chart.
Build Internal Controls
Strong habits reduce errors and audit risk.
- Check edits before billing. Use a claim scrubber with current NCCI tables.
- Build smart templates. Include fields for region, minutes, and goals.
- Require time entries. Make minutes mandatory for timed codes.
- Audit monthly. Review a sample of claims with therapy add-ons.
- Track modifier use. Watch for rising 59 or XS rates.
- Train providers and staff. Cover the 8-minute rule, NCCI, and payer policy.
- Keep a payer matrix. Record each payer’s therapy rules in one place.
- Review denials by code. Patterns point to training gaps.
Professional medical coding in SC can check charts against codes before claims go out. Strong denial management support can trace repeat denials to a cause.
When to Bring In Outside Help
Consider help when:
- Denials for bundled codes keep rising
- You have received a payer records request or audit letter
- You are adding a therapy program to your practice
- Staff turnover has hurt coding accuracy
- You bill for several payers with different rules
A billing partner with chiropractic experience can review your claims and set up workflows. Dedicated chiropractor billing services are built for this setting.
Helpful Outside Resources
Other billing teams share related guidance. This article on claims scrubbing and why it matters explains how pre-submission checks catch edit conflicts. The medical coding service from eBridge RCM shows what outsourced coding review can cover. You can also browse the eBridge RCM for related billing topics.
Let the Chart Earn the Modifier
Therapy add-ons can help patients and support your practice. They also carry risk when billed alongside chiropractic manipulation.
Check coverage first. Check the NCCI edit next. Confirm the region, minutes, and medical necessity. Use XS or 59 only when the service is distinct and the record shows it. Convert timed minutes to units with the right method.
Treat the modifier as a result of good documentation, not a substitute for it. That one habit lowers denials and audit risk.
If you want help with chiropractic coding, modifier rules, or claim cleanup, the team at States Billing Services can review your workflow and support your billing. Call today, or visit the chiropractor billing services in South Carolina page to start a conversation.
