The Core Hip Pain ICD-10 Codes You Need to Know

Pain, no matter where it occurs in the body, is a silent language. It whispers before it screams. Hip pain also has a way of entering life quietly, then gradually demanding attention. It doesn’t just affect how you walk but also changes how you sit, how you sleep, and how you live. And before you know it, the simplest movements become daily challenges.

Because hip pain significantly affects function, it is one of the most frequently documented musculoskeletal complaints in outpatient and rehabilitation settings. That also makes it one of the most commonly coded diagnoses under ICD-10. Small coding errors can quickly turn into claim denials and lost revenue. This guide gives you a clear, practical roadmap to using hip pain ICD-10 codes correctly so your documentation, coding, and billing stay tightly aligned.

The M25.55 Family: General Hip Pain Codes

The M25.55 code series covers joint pain in the hip when no confirmed underlying diagnosis has been established. These are symptom codes, appropriate for initial evaluations or when the clinical workup is still pending.

Critical Rule: M25.559 (unspecified) should be the last resort. Payers in 2025 and 2026 have tightened scrutiny on unspecified codes. Always document and code laterality — right (M25.551) or left (M25.552) — when the clinical note supports it. A claim submitted with M25.559 when the chart clearly reads “right hip pain” is a compliance risk and a denial waiting to happen.

Condition-Specific Hip Pain Codes 

Once imaging, physical examination, or lab work confirms a diagnosis, you must stop using M25.55x and code the confirmed condition. This is one of the most common coding errors seen in orthopedic and rehabilitation billing.

Osteoarthritis of the Hip — M16 Series

Osteoarthritis (OA) is the most common cause of hip pain, particularly in adults over 60. The 2026 edition of ICD-10-CM M16 became effective October 1, 2025 (Source: icd10data.com / CMS). It describes a noninflammatory degenerative disease of the hip joint characterized by pain on weight-bearing or motion.

ICD-10-CM provides more specificity than the retired ICD-9 system, with distinct codes for primary, secondary, post-traumatic, and dysplastic osteoarthritis. If the chart documents confirmed OA, using M25.551 instead of M16.11 is a coding error that will invite payer scrutiny.

Trochanteric Bursitis — M70.6 Series

Trochanteric bursitis, or inflammation of the bursa near the greater trochanter, presents as lateral hip pain. It is more prevalent in women and middle-aged to older adults. It can result from overuse, injury, spinal abnormalities, arthritis, or prior surgery.

If the chart documents tenderness over the greater trochanter with confirmed bursitis, use M70.61/62 — not M25.551/552. These codes are mutually exclusive per the ICD-10-CM excludes rules.

Hip Labral Tears — M24.15x / S73.19xA

The labrum is the cartilage ring that seals the hip socket and keeps the femoral head aligned during movement. Labral tears can result from repetitive motion, structural abnormalities like hip impingement, or acute trauma.

Hip Fracture Codes — S72 Series

Elderly patients, particularly those with osteoporosis, are at elevated risk for hip fractures. Fracture coding in ICD-10 requires the most documentation specificity, including fracture type, displacement status, laterality, and encounter character (initial, subsequent, sequela).

Per the CMS ICD-10 Clinical Concepts for Orthopedics guide, accurate fracture documentation must include: the side, location with anatomical landmarks, fracture classification, displacement status, and whether infection is present.

Referred Pain and Nerve-Related Hip Pain

Not all hip pain originates in the hip joint. Lumbar spine disorders, sacroiliac joint dysfunction, and sciatic nerve compression frequently produce pain perceived in the hip region.

If hip pain is the presenting complaint but the confirmed source is lumbar radiculopathy, sequence M54.16 as the primary diagnosis. Coding M25.551 alongside M54.3 for sciatica with referred hip pain is acceptable only when the hip also has independent pathology.

Chronic Pain and Post-Procedural Hip Pain

For chronic refractory hip pain (e.g., failed PT and NSAIDs for 18+ months), G89.29 is sequenced first, with M25.551 or M25.552 listed as a secondary code to identify the anatomical site.

The Three Cardinal Rules of Hip Pain Coding

Medical coding professionals and billing specialists consistently identify the same three rules that separate clean claims from denied ones:

Always Specify Laterality

The ICD-10-CM guideline is unambiguous: code to the highest level of specificity. For hip pain, that means right (M25.551) or left (M25.552). In 2025–2026, payers are using automated review to flag unspecified codes. A provider note that says “right hip pain” paired with code M25.559 will trigger review or denial. Laterality must be reflected in both the clinical note and the code.

Code the Diagnosis, Not the Symptom

As soon as imaging, examination, or diagnostics confirm an underlying condition, osteoarthritis, bursitis, labral tear, or fracture, the general symptom code (M25.55x) must be replaced with the condition-specific code. Using symptom codes after a confirmed diagnosis is a compliance error that undermines medical necessity justification for services like injections, physical therapy, or imaging.

Document Thoroughly for Every Encounter

Payers have implemented stricter automated documentation review in 2025–2026. According to coding and billing specialists, every hip pain encounter note should include:

• Quantifiable pain scores (numeric or standardized scales)
• Laterality is explicitly stated in the assessment
• Direct correlation between diagnostic findings and reported symptoms
• Functional limitation documentation with measurable outcomes
• Treatment plan and patient response
• Imaging results when available

Common Hip Pain Coding Errors and How to Avoid Them

Using Unspecified Codes When Laterality is Documented

This is the most prevalent error. If the provider wrote “left hip,” code M25.552. Period.

Continuing to Use M25.55x After a Confirmed Diagnosis

Suppose a general outpatient clinic submitted a claim using M25.559 for a therapy session after the therapist had already documented confirmed right hip osteoarthritis. The correct code was M16.11. The claim was denied. This pattern repeats thousands of times daily across U.S. practices.

Incorrect Sequencing with Complicating Conditions

When a pathological fracture is the focus of treatment and hip pain is secondary, the fracture code sequences first, followed by pain. The ICD-10-CM guidelines are explicit: “the primary diagnosis should reflect the condition receiving the most intensive evaluation and treatment resources during that specific encounter.”

Ignoring Excludes Notes

ICD-10-CM excludes notes that function as hard stops. M16.12 (left hip OA) and M70.72 (left trochanteric bursitis) cannot be coded alongside M25.552 — these specific diagnoses replace the general pain code, not supplement it.

Best Practices for Hip Pain ICD-10 Coding and Billing

• Document laterality, onset, aggravating factors, and imaging results explicitly.
• Query providers for unclear laterality or acuity.
• Link codes to CPT procedures (e.g., injections, imaging) with supporting medical necessity per CMS LCDs.
• Avoid M25.55- with definitive codes like M16.9 unless pain is a distinct focus.

Accurate coding reduces denials in orthopedic and pain management claims.

Conclusion

Hip pain ICD-10 coding centers on M25.551 (right), M25.552 (left), and M25.559 (unspecified) per 2026 CMS guidelines. Use symptom codes only without a definitive diagnosis, prioritize laterality and specificity, and sequence underlying conditions first. Proper documentation from sources like NIH MedlinePlus and AAOS ensures compliant, reimbursable claims while supporting patient care.

For expert medical billing services specializing in orthopedic ICD-10 coding, including hip pain claims, contact Oregon Medical Billing today. Our team maximizes reimbursements and minimizes denials. Reach out now to streamline your revenue cycle.

FAQs

What is the ICD-10 code for hip pain?

ICD-10 code M25. 55 for Pain in the hip is a medical classification as listed by WHO under the range – Arthropathies.

What is a red flag for hip pain?

Hip pain red flags signaling serious issues needing immediate medical attention include inability to bear weight, sudden severe pain after injury, visible deformity, signs of infection (fever, warmth, redness), sudden numbness/weakness, and pain disrupting sleep.

What disease starts with hip pain?

Multiple types of arthritis can lead to hip pain: Osteoarthritis is degenerative and occurs when protective bone cartilage wears away. Aging is the main culprit for this condition. Rheumatoid arthritis is an autoimmune disease that causes inflammation throughout your body and attacks your joints.