Convert to ICD-10-CM:
198.4 converts approximately to:
- 2015/16 ICD-10-CM C79.32 Secondary malignant neoplasm of cerebral meninges
Or:
- 2015/16 ICD-10-CM C79.49 Secondary malignant neoplasm of other parts of nervous system
ICD-9-CM Volume 2 Index entries containing back-references to
198.4:
- Meningitis (basal) (basic) (basilar) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetica) (toxic) 322.9

cancerous (M8000/6) 198.4
carcinomatous (M8010/6) 198.4