M23.004: Cystic meniscus, unspecified medial meniscus, left knee
Cystic meniscus, unspecified medial meniscus, left knee
Quick Clinical & Billing Summary
What is ICD-10-CM code M23.004? M23.004 represents Cystic meniscus, unspecified medial meniscus, left knee. Under official CDC guidelines, this code is billable and specific for claim submission.
Code Hierarchy & Classification
Clinical Guidance & Documentation Standards
Associated Procedures & Medicare RVU Reimbursement
Open RVU Calculator →Typical outpatient and office evaluation procedures frequently billed alongside diagnosis M23.004:
| CPT/HCPCS | Description | Work RVU | Non-Facility Fee | Facility Fee |
|---|---|---|---|---|
| 99213 | Office/outpatient visit, established patient, 20-29 minutes (Low MDM) | 1.30 | $91.69 | $66.79 |
| 99214 | Office/outpatient visit, established patient, 30-39 minutes (Moderate MDM) | 1.92 | $133.61 | $100.21 |
| 96372 | Therapeutic, prophylactic, or diagnostic injection (subcutaneous/intramuscular) | 0.17 | $18.34 | $12.44 |
CPT Modifier & Billing Rules
Append when a significant, separately identifiable evaluation and management service is provided on the same calendar day as a minor surgical procedure or injection.
Identifies procedures or services not normally reported together but distinct under the clinical circumstances. Use CMS X-modifiers (XE, XS, XP, XU) where required by Medicare.
Frequently Asked Questions about M23.004
Is M23.004 a billable ICD-10 code?
Yes, M23.004 is a valid, billable and specific ICD-10-CM code. It can be reported as a primary or secondary diagnosis on medical claims.
What is the ICD-10 code for Cystic meniscus, unspecified medial meniscus, left knee?
The primary ICD-10-CM code for Cystic meniscus, unspecified medial meniscus, left knee is M23.004.
What is the effective date of the current M23.004 code?
The code is active for fiscal year FY2027, effective starting 2026-10-01.
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