How is bone metastasis coded in ICD-10?

Bone metastasis is coded using C79.51 in ICD-10, with additional codes for the primary cancer site if known.

What is the ICD-10 code for bone metastasis from breast cancer?

Use C79.51 for bone metastasis and C50.--- for the primary breast cancer site.

ICD-10 Coding for Bone Metastases(C79.51, C50.412, C50.422)

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Learn about ICD-10 coding for bone metastases, including primary and secondary codes, documentation requirements, and common pitfalls.

Also known as:

Mets to BoneSecondary Bone Cancerosseous metastases

Related ICD-10 Code Ranges

Complete code families applicable to Bone Metastases

C00-D49Primary Range

Neoplasms

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
C79.51	Secondary malignant neoplasm of bone	Use when documenting treatment or diagnosis of bone metastases.	Imaging studies confirming bone lesions Histological confirmation of metastatic cancer
C50	Malignant neoplasm of breast	Use when breast cancer is the primary site of metastasis.	Histological confirmation of breast cancer
C80.1	Malignant (primary) neoplasm, unspecified	Use when the primary site of cancer is not documented.	Lack of documentation for primary cancer site

Primary ICD-10-CM Codes

Secondary malignant neoplasm of bone

C79.51Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Multiple myelomaC90.00

Documentation & Coding Risks

Avoid these common issues when documenting Bone Metastases.

Omitting primary cancer code when known

Impact

Clinical: Incomplete clinical picture., Regulatory: Non-compliance with coding standards., Financial: Potential for claim denials.

Mitigation

Review patient history for primary cancer documentation, Ensure all relevant codes are included

Using C79.51 for multiple myeloma

Impact

Reimbursement: May lead to denied claims., Compliance: Non-compliance with ICD-10 guidelines., Data Quality: Inaccurate representation of patient condition.

Mitigation

Do not use C79.51; bone involvement is integral to multiple myeloma.

Incorrect sequencing of primary and secondary codes

Impact

Reimbursement: Incorrect DRG assignment., Compliance: Violates CMS coding guidelines., Data Quality: Misleading data on cancer treatment focus.

Mitigation

Sequence secondary code first if treatment is for metastasis.

Incorrect Code Sequencing

Impact

Failure to sequence codes correctly based on treatment focus.

Mitigation

Regular training on ICD-10 guidelines and CMS updates.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with C79.51.

Primary Code

C79.51

Secondary malignant neoplasm of bone

Quick Navigation

ICD-10 codes7

Coding risks4

FAQs2

ICD-10 Coding for Bone Metastases(C79.51, C50.412, C50.422)

Documentation & Coding Risks

Frequently Asked Questions

How is bone metastasis coded in ICD-10?

What is the ICD-10 code for bone metastasis from breast cancer?

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