DocScrib
How it WorksPricingBlog
Sign InSign UpBook a Demo
DocScrib

AI-powered medical documentation platform streamlining healthcare workflows through intelligent transcription and clinical note generation.

Book a Demo

Product

  • Medical Templates
  • Pricing
  • Integrations
  • Security & Compliance

Resources

  • Blog
  • Documentation
  • Case Studies

Contact

  • support@docscrib.com
  • +1 (555) 123-4567
  • 123 Healthcare Blvd
    Medical District, CA 90210
© 2025 DocScrib. All rights reserved.
Privacy PolicyTerms of ServiceCookie Policy
Home/Diagnosis/ICD-10 Coding for Cancer of Unknown Primary

ICD-10 Coding for Cancer of Unknown Primary

C80.0
C80.1

Complete ICD-10-CM coding and documentation guide for icd-10 coding for cancer of unknown primary includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
CUP
Occult Primary Cancer
Join 10,000+ Happy Clinicians

The AI Medical Scribe for Happiest Clinicians

Save 2+ hours daily with instant clinical documentation.
Our AI scribe listens, understands, and generates comprehensive medical notes so you can focus on patient care.

Start Free Trial
No credit card required•HIPAA compliant
Recording Controls
Start recording to see live transcription
Live Conversation - Try For Free!
Real-time transcription with automatic speaker identification

Ready to Record

Start recording to see live conversation transcription

Key Information: ICD-10 Coding for Cancer of Unknown Primary

Essential facts and insights about ICD-10 Coding for Cancer of Unknown Primary

Use ICD-10 code C80.0 for disseminated malignant neoplasm, unspecified, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Disseminated malignant neoplasm, unspecified

Billable Code
C80.0
Billable

Diagnostic Criteria

clinical:
  • Primary site remains unknown after comprehensive workup
coding:
  • Sequence after metastatic site codes

Applicable To

  • • Metastatic disease with confirmed unknown primary after workup

Important Notes

  • • C80.0 should be used when exhaustive workup fails to identify the primary site.

Malignant neoplasm without specification of site

Billable Code
C80.1
Billable

Diagnostic Criteria

clinical:
  • Documentation states 'primary unknown' without metastatic confirmation

Applicable To

  • • Unspecified primary malignancy without confirmed metastatic sites

Important Notes

  • • C80.1 is used when the primary site is unspecified and no metastasis is documented.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z51.11

Encounter for antineoplastic chemotherapy

Use when patient is receiving chemotherapy for CUP.

Frequently Asked Questions

What is the ICD-10 code for cancer of unknown primary?

The ICD-10 code for cancer of unknown primary is C80.0 when the primary site is confirmed unknown after a comprehensive workup.

When should C80.1 be used?

C80.1 is used when the primary malignancy site is unspecified and no metastasis is documented.

Quick Navigation
All DiagnosesICD-10 Codes

Related Resources

How Medical Coding WorksBrowse All Codes