ICD-10 C4A
Merkel cell carcinoma
ICD10
C4A
Neoplasms
Description
Merkel cell carcinoma
Documentation Requirements
- Document clinical indications and clear medical necessity supporting the encounter or procedure.
- Ensure complete provider signatures, credentials, date, and specific place of service (POS).
- Verify documentation strictly supports code specificity to prevent downcoding or claim denials.
Billing & Coding Tips
- Verify current payer fee schedules, NCCI edits, and Medically Unlikely Edits (MUEs).
- Append correct modifiers (e.g., 25, 59, 26, TC) where distinct procedural services or components apply.
- Confirm pre-authorization rules with Medicare, Medicaid, and commercial plans before submission.
Related Codes
C4A.0 C4A.1 C4A.10 C4A.11 C4A.111 C4A.112 C4A.12 C4A.121 C4A.122 C4A.2 C4A.20 C4A.21 C4A.22 C4A.3 C4A.30
Quantum Health Services provides full-cycle revenue cycle management and medical billing services nationwide. This code reference is for educational purposes; always verify official payer policies. CPT© descriptors require proper AMA licensing.