CPT (Current Procedural Terminology) codes are five-digit numeric codes used to describe medical, surgical, and diagnostic services. They are maintained by the American Medical Association and used by healthcare providers, insurers, and Medicare for billing and reimbursement.

What is the difference between facility and non-facility rates?

Non-facility (office) rates are what Medicare pays when a service is performed in a physician's office. Facility rates are lower because when a service is performed in a hospital or ambulatory surgery center, the facility bills separately for overhead costs like equipment and supplies.

RVU stands for Relative Value Unit. Medicare uses RVUs to measure the value of physician services based on three components: physician work, practice expense, and malpractice cost. Total RVUs are multiplied by the conversion factor ($33.40 in 2026) to calculate the Medicare payment amount.

Is M54.50 a billable ICD-10-CM code?

Yes. M54.50 (Low back pain, unspecified) is a billable/specific ICD-10-CM code and can be reported on a claim when the documentation supports it.

What procedures are commonly billed with M54.50?

Procedures frequently paired with M54.50 include 99214 (Office/outpatient visit, established patient, moderate complexity). The diagnosis must support medical necessity for the service billed.

ICD-10-CM · M00–M99Billable

ICD-10-CM Code M54.50

Low back pain, unspecified

Source: CMS ICD-10-CM FY2026Effective October 1, 2025Reviewed by the D3rx Clinical Billing Team

Diagnosis information

Billable

Yes

Valid for claim submission

Chapter

M00–M99

Diseases of the musculoskeletal system

Risk adjustment

None

Not risk-adjustable (V28)

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Procedures commonly billed with M54.50

CPT/HCPCS procedures frequently paired with M54.50 on claims. The diagnosis helps support medical necessity for the service, but documentation, the service performed, and payer/CMS policy all apply — link each line item to the diagnosis that best documents why it was needed.

99214Office/outpatient visit, established patient, moderate complexity

More codes in the M54 category

Other billable ICD-10-CM codes in the same category as M54.50. Coding to the highest specificity the documentation supports is what keeps a claim clean — pick the child code that most precisely matches the diagnosis.

M54.00Panniculitis affecting regions of neck and back, site unspecified
M54.01Panniculitis affecting regions of neck and back, occipito-atlanto-axial region
M54.02Panniculitis affecting regions of neck and back, cervical region
M54.03Panniculitis affecting regions of neck and back, cervicothoracic region
M54.04Panniculitis affecting regions of neck and back, thoracic region
M54.05Panniculitis affecting regions of neck and back, thoracolumbar region
M54.06Panniculitis affecting regions of neck and back, lumbar region
M54.07Panniculitis affecting regions of neck and back, lumbosacral region
M54.08Panniculitis affecting regions of neck and back, sacral and sacrococcygeal region
M54.09Panniculitis affecting regions, neck and back, multiple sites in spine
M54.10Radiculopathy, site unspecified
M54.11Radiculopathy, occipito-atlanto-axial region

Documentation & coding notes

M54.50 is a billable/specific ICD-10-CM code — it can be reported as a primary or secondary diagnosis when the documentation supports it. Code to the highest level of specificity the record allows.
Always verify the code against the current ICD-10-CM Official Guidelines and the payer's coverage policy before submitting — coverage, medical necessity edits, and sequencing rules vary by payer.

Related M00–M99 codes

M54.51 M19.90 M17.11 M25.561 M81.0 M62.838

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Medical coding disclaimer

ICD-10-CM codes and descriptions shown are from the CMS FY2026 official code set and HCC mappings from the CMS-HCC V28 model (payment year 2026), shown for educational reference. Official Guidelines, payer coverage, medical-necessity edits, and sequencing rules vary. Always verify with the current ICD-10-CM Official Guidelines and the payer before submitting claims. D3rx is not responsible for coding or billing outcomes.