Back to HomeBeta

ICD-10 Coding for Abnormal Bony Structure in Left Shoulder(M89.8X1, Q74.0)

Complete ICD-10-CM coding and documentation guide for Abnormal Bony Structure in Left Shoulder. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Os AcromialeShoulder Bone Anomaly

Related ICD-10 Code Ranges

Complete code families applicable to Abnormal Bony Structure in Left Shoulder

M89.8X1Primary Range

Other specified disorders of bone, left shoulder

Primary code for structural abnormalities in the left shoulder without fracture or dislocation.

Congenital malformations of the musculoskeletal system

Used for congenital os acromiale, an anatomical variant.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
M89.8X1Other specified disorders of bone, left shoulderUse when there is a structural abnormality in the left shoulder confirmed by imaging, without acute trauma.
  • Imaging confirmation (CT/MRI/X-ray) of bony irregularity
  • Chronic pain or limited range of motion
Q74.0Congenital malformations of the musculoskeletal systemUse for congenital os acromiale when it is an anatomical variant without acquired conditions.
  • Documented congenital anomaly
  • No history of trauma

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for abnormal bony structure in left shoulder

Essential facts and insights about Abnormal Bony Structure in Left Shoulder

The ICD-10 code for abnormal bony structure in the left shoulder is M89.8X1, used for specified bone disorders without fracture or dislocation.

Primary ICD-10-CM Codes for abnormal bony structure in left shoulder

Other specified disorders of bone, left shoulder
Billable Code

Decision Criteria

clinical Criteria

  • Confirmed structural abnormality on imaging without acute trauma.

coding Criteria

  • Avoid using pain codes as primary when structural etiology is confirmed.

Applicable To

  • Os acromiale
  • Bone cysts

Excludes

Clinical Validation Requirements

  • Imaging confirmation (CT/MRI/X-ray) of bony irregularity
  • Chronic pain or limited range of motion

Code-Specific Risks

  • Confusing acquired with congenital conditions
  • Using general codes when specific codes are available

Coding Notes

  • Ensure imaging studies confirm the diagnosis to support coding.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Bone cyst, unspecified

M85.60
Use if a bone cyst is present alongside the primary condition.

Impingement syndrome of left shoulder

M75.42
Use if secondary impingement syndrome is due to abnormal anatomy.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Fracture of left humerus

S42.292A
Use for acute traumatic fractures, not for chronic structural abnormalities.

Primary osteoarthritis, left shoulder

M19.012
Use for degenerative changes rather than structural anomalies.

Other specified disorders of bone, left shoulder

M89.8X1
Use for acquired structural abnormalities, not congenital.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Abnormal Bony Structure in Left Shoulder to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code M89.8X1.

Impact

Clinical: May lead to misdiagnosis or inappropriate treatment., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials due to lack of specificity.

Mitigation Strategy

Ensure detailed imaging findings are documented., Use specific anatomical terms in the assessment.

Impact

Reimbursement: Incorrect coding can lead to denied claims., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation Strategy

Use M89.8X1 for structural abnormalities confirmed by imaging.

Impact

Lack of imaging confirmation for structural abnormalities.

Mitigation Strategy

Ensure all imaging studies are documented and linked to the diagnosis.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Abnormal Bony Structure in Left Shoulder, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Abnormal Bony Structure in Left Shoulder

Use these documentation templates to ensure complete and accurate documentation for Abnormal Bony Structure in Left Shoulder. These templates include all required elements for proper coding and billing.

Os Acromiale with Secondary Impingement

Specialty: Orthopedics

Required Elements

  • Patient history
  • Physical examination findings
  • Imaging results
  • Diagnosis and plan

Example Documentation

**Subjective:** 'Left shoulder pain worsening over 6 months, exacerbated by overhead activities. No recent trauma.' **Objective:** 'Tenderness: Acromion, posterior glenoid. ROM: Abduction limited to 90° (vs. 180° contralateral).' **Imaging:** 'CT (03/29/25): Unfused mesoacromion with 3mm superior displacement, subacromial spur.' **Assessment:** 'Symptomatic os acromiale (M89.8X1) with secondary impingement (M75.42).' **Plan:** 'Consider surgical intervention if conservative management fails.'

Examples: Poor vs. Good Documentation

Poor Documentation Example
Abnormal shoulder bone.
Good Documentation Example
3D CT confirms non-union of left os acromiale at mesoacromial junction with 5mm displacement.
Explanation
The good example provides specific imaging findings and anatomical details, supporting accurate coding.

Need help with ICD-10 coding for Abnormal Bony Structure in Left Shoulder? Ask your questions below.

Ask about any ICD-10 CM code, or paste a medical note

We build tools for
clinician happiness.

Learn More at Freed.ai
Back to HomeBeta

Built by Freed

Try Freed for free for 7 days.

Learn more