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Home/Diagnosis/ICD-10 Coding for Brain Metastases

ICD-10 Coding for Brain Metastases

C79.31
C71.9

Complete ICD-10-CM coding and documentation guide for icd-10 coding for brain metastases includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Brain Mets
Secondary Brain Tumors
metastatic brain tumor
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Key Information: ICD-10 Coding for Brain Metastases

Essential facts and insights about ICD-10 Coding for Brain Metastases

Use ICD-10 code C79.31 for secondary malignant neoplasm of brain, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Secondary malignant neoplasm of brain

Billable Code
C79.31
Billable

Diagnostic Criteria

clinical:
  • • Confirmed secondary brain metastasis via imaging or biopsy.
coding:
  • • Primary cancer site must be coded first if it is the reason for the encounter.

Applicable To

  • • Metastatic brain tumor

Important Notes

  • • Ensure documentation clearly links the brain lesion to the primary cancer.

Malignant neoplasm of brain, unspecified

Billable Code
C71.9
Billable

Applicable To

  • • Brain tumor, NOS

Important Notes

  • • Ensure documentation supports the use of an unspecified code.
Ancillary Codes

Additional codes that may be used with this diagnosis

Z85.3

Personal history of malignant neoplasm of breast

Use when the primary cancer is breast and is no longer active.

Frequently Asked Questions

What is the ICD-10 code for brain mets?

The ICD-10 code for confirmed brain metastases is C79.31. Use this code when the primary cancer site is known and documented.

When should C71.9 be used instead of C79.31?

Use C71.9 when the primary site of the brain tumor is unknown or unspecified. C79.31 is used when the primary site is known.

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