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M75.40
ICD-10-CM
Impingement Syndrome

Find information on Impingement Syndrome diagnosis, including clinical documentation tips, ICD-10 codes (M75.1, M75.4, M75.5), CPT codes for injections, surgical procedures, and physical therapy, plus healthcare resources for effective patient care and accurate medical coding related to shoulder impingement, subacromial impingement, and external impingement. Learn about documenting pain, limited range of motion, and positive impingement tests for optimal reimbursement and accurate medical records.

Also known as

Shoulder Impingement
Subacromial Impingement

Diagnosis Snapshot

Key Facts
  • Definition : Compression of shoulder structures, often the rotator cuff tendons, leading to pain.
  • Clinical Signs : Shoulder pain with overhead activity, weakness, limited range of motion, painful arc.
  • Common Settings : Sports medicine clinics, orthopedic offices, physical therapy centers.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC M75.40 Coding
M75.4-

Shoulder impingement syndrome

Painful compression of shoulder tendons/bursa.

M75.1-

Rotator cuff syndromes

Includes tears and tendinitis of rotator cuff muscles.

M75.8-

Other specified shoulder lesions

Covers other specific shoulder problems not listed elsewhere.

M75.9-

Unspecified shoulder lesion

Used when a more specific shoulder diagnosis isn't available.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the impingement syndrome specified as shoulder?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Shoulder pain with overhead activity
Rotator cuff tear
Biceps tendinopathy

Documentation Best Practices

Documentation Checklist
  • Impingement Syndrome diagnosis: ICD-10 code (M75.4)
  • Document specific location: shoulder, hip, etc.
  • Physical exam findings: limited ROM, pain with palpation
  • Symptoms: pain, weakness, stiffness. Onset and duration
  • Imaging results supporting impingement diagnosis if any

Coding and Audit Risks

Common Risks
  • Unspecified Shoulder

    Coding impingement without laterality or specific joint (e.g., glenohumeral) risks claim denial for lacking specificity. Use M75.41, M75.42, or M75.5.

  • Rotator Cuff Miscode

    Impingement is often associated with rotator cuff tears. Incorrectly coding a tear as the primary diagnosis when impingement is the primary finding leads to inaccurate reimbursement.

  • Missing Supporting Documentation

    Lack of clinical documentation supporting the impingement diagnosis (e.g., physical exam findings, imaging results) can trigger audits and claim denials. Ensure complete documentation.

Mitigation Tips

Best Practices
  • Thorough exam, document ROM, special tests (ICD-10 M75.1,CPT 29826) for accurate CDI
  • Image shoulder (X-ray, MRI) rule out rotator cuff tear, other pathologies (ICD-10 codes)
  • Conservative Rx 1st: NSAIDs, PT (CPT 97110), activity modification, patient education
  • Subacromial injection (CPT 20610) if conservative Rx fails, document indication, response
  • Surgical consult if no improvement, clearly document rationale, pre-op diagnosis (compliance)

Clinical Decision Support

Checklist
  • Painful arc during shoulder abduction range of motion documented
  • Positive Neer or HawkinsKennedy test finding recorded
  • Subacromial tenderness on palpation noted
  • Evaluate for rotator cuff tear to exclude other diagnoses
  • Consider imaging shoulder XrayMRI if clinically indicated

Reimbursement and Quality Metrics

Impact Summary
  • Impingement Syndrome reimbursement hinges on accurate ICD-10 (M75.4) and CPT coding (29826, 23410, etc.) for injections, arthroscopy, or other procedures. Claims denials impact revenue cycle.
  • Coding quality directly affects hospital reported quality metrics for Impingement Syndrome. Accurate documentation of severity and treatment outcomes is crucial for performance tracking.
  • Missed diagnoses or unspecified codes (M75.9) lead to lower reimbursement and negatively skew quality data, impacting hospital rankings and pay-for-performance programs.
  • Proper E/M coding for initial and follow-up visits is essential for appropriate Impingement Syndrome reimbursement. Undercoding impacts physician revenue and hospital financial performance.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code 726.2 for unspecified shoulder
  • Document impingement signs/symptoms
  • 726.0 for subacromial impingement
  • Specify laterality (right/left)
  • Add stage if documented

Documentation Templates

Patient presents with complaints consistent with shoulder impingement syndrome.  Symptoms include pain in the shoulder, particularly with overhead activities, reaching across the body, and during sleep.  The patient reports difficulty with activities of daily living such as dressing and reaching.  On physical examination, positive findings include Neer's test, Hawkins-Kennedy test, and painful arc of motion.  Palpation reveals tenderness over the subacromial bursa.  Differential diagnoses considered include rotator cuff tear, adhesive capsulitis, and cervical radiculopathy.  Assessment:  Shoulder impingement syndrome, right shoulder.  Plan:  Conservative management initiated with NSAIDs for pain relief, physical therapy referral for range of motion exercises and strengthening of the rotator cuff muscles, and patient education on activity modification.  Follow-up scheduled in four weeks to assess response to treatment.  ICD-10 code:  M75.41.  Future considerations include corticosteroid injection if symptoms persist and MRI if concern for rotator cuff tear remains.