ICD-9 Code 198.4
Secondary malignant neoplasm of other parts of nervous system
Not Valid for Submission
198.4 is a legacy non-billable code used to specify a medical diagnosis of secondary malignant neoplasm of other parts of nervous system. This code was replaced on September 30, 2015 by its ICD-10 equivalent.
ICD-9: | 198.4 |
Short Description: | Sec malig neo nerve NEC |
Long Description: | Secondary malignant neoplasm of other parts of nervous system |
Convert 198.4 to ICD-10
The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:
Code Classification
-
Neoplasms (140–239)
-
Malignant neoplasm of other and unspecified sites (190-199)
- 198 Secondary malignant neoplasm of other specified sites
-
Malignant neoplasm of other and unspecified sites (190-199)
Information for Medical Professionals
Synonyms
- Leukemic infiltrate of choroid
- Lymphoma of retina
- Lymphomatous meningitis
- Metastasis to nervous system and eye
- Metastatic neuroblastoma of orbit proper
- Secondary malignant neoplasm of abducens nerve
- Secondary malignant neoplasm of accessory nerve
- Secondary malignant neoplasm of acoustic nerve
- Secondary malignant neoplasm of central nervous system
- Secondary malignant neoplasm of cerebral meninges
- Secondary malignant neoplasm of choroid
- Secondary malignant neoplasm of ciliary body
- Secondary malignant neoplasm of conjunctiva
- Secondary malignant neoplasm of cornea
- Secondary malignant neoplasm of cranial nerve
- Secondary malignant neoplasm of eye
- Secondary malignant neoplasm of facial nerve
- Secondary malignant neoplasm of glossopharyngeal nerve
- Secondary malignant neoplasm of hypoglossal nerve
- Secondary malignant neoplasm of lacrimal drainage structure
- Secondary malignant neoplasm of lacrimal gland
- Secondary malignant neoplasm of lacrimal gland duct
- Secondary malignant neoplasm of nervous system
- Secondary malignant neoplasm of oculomotor nerve
- Secondary malignant neoplasm of olfactory nerve
- Secondary malignant neoplasm of optic nerve
- Secondary malignant neoplasm of orbit proper
- Secondary malignant neoplasm of retina
- Secondary malignant neoplasm of sclera
- Secondary malignant neoplasm of spinal meninges
- Secondary malignant neoplasm of trigeminal nerve
- Secondary malignant neoplasm of trochlear nerve
- Secondary malignant neoplasm of uveal tract
- Secondary malignant neoplasm of vagus nerve
- T3: Aerodigestive tract tumor extends to anterior orbit and/or maxillary sinus
Index to Diseases and Injuries
References found for the code 198.4 in the Index of Diseases and Injuries:
- 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
- nbsp
- acoustic nerve 192.0 198.4 225.1 237.9 239.7
- arachnoid cerebral 192.1 198.4 225.2 237.6 239.7
- spinal 192.3 198.4 225.4 237.6 239.7
- auditory
- nerve 192.0 198.4 225.1 237.9 239.7
- brain NEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular. 191.9 198.3 225.0 237.5 239.6- meninges 192.1 198.4 225.2 237.6 239.7
- cerebrum cerebral cortex hemisphere white matter 191.0 198.3 225.0 237.5 239.6
- meninges 192.1 198.4 225.2 237.6 239.7
- chiasma opticum 192.0 198.4 225.1 237.9 239.7
- choroid 190.6 198.4 234.0 224.6 238.8 239.81
- plexus 191.5 198.3 225.0 237.5 239.6
- ciliary body 190.0 198.4 234.0 224.0 238.8 239.89
- conjunctiva 190.3 198.4 234.0 224.3 238.8 239.89
- conNEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular.tive tissue NEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular. 171.9 198.89 215.9 238.1 239.2- orbit 190.1 198.4 234.0 224.1 238.8 239.89
- cornea limbus 190.4 198.4 234.0 224.4 238.8 239.89
- cranial fossa any 191.9 198.3 225.0 237.5 239.6
- meninges 192.1 198.4 225.2 237.6 239.7
- nerve any 192.0 198.4 225.1 237.9 239.7
- crystalline lens 190.0 198.4 234.0 224.0 238.8 239.89
- dura cranial mater 192.1 198.4 225.2 237.6 239.7
- cerebral 192.1 198.4 225.2 237.6 239.7
- spinal 192.3 198.4 225.4 237.6 239.7
- epidural 192.9 198.4 225.9 237.9 239.7
- extradural 192.9 198.4 225.9 237.9 239.7
- extraocular muscle 190.1 198.4 234.0 224.1 238.8 239.89
- eye NEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular. 190.9 198.4 234.0 224.9 238.8 239.89- contiguous sites 190.8
- specified sites NEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular. 190.8 198.4 234.0 224.8 238.8 239.89- basal cell carcinoma 173.31
- specified type NEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular. 173.39
- squamous cell carcinoma 173.32
- eyeball 190.0 198.4 234.0 224.0 238.8 239.89
- falx cerebella cerebri 192.1 198.4 225.2 237.6 239.7
- frontal
- meninges 192.1 198.4 225.2 237.6 239.7
- ganglion SEE ALSO See Also
A “see also” instruction following a main term in the index instructs that there is another main term that may also be referenced that may provide additional index entries that may be useful. It is not necessary to follow the “see also” note when the original main term provides the necessary code. Neoplasm conNEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular.tive tissue 171.9 198.89 215.9 238.1 239.2- cranial nerve 192.0 198.4 225.1 237.9 239.7
- intraocular 190.0 198.4 234.0 224.0 238.8 239.89
- intraorbital 190.1 198.4 234.0 224.1 238.8 239.89
- iris 190.0 198.4 234.0 224.0 238.8 239.89
- lacrimal
- canaliculi 190.7 198.4 234.0 224.7 238.8 239.89
- duct nasal 190.7 198.4 234.0 224.7 238.8 239.89
- gland 190.2 198.4 234.0 224.2 238.8 239.89
- punctum 190.7 198.4 234.0 224.7 238.8 239.89
- sac 190.7 198.4 234.0 224.7 238.8 239.89
- lens crystalline 190.0 198.4 234.0 224.0 238.8 239.89
- limbus of cornea 190.4 198.4 234.0 224.4 238.8 239.89
- lumbosacral plexus 171.6 198.4 215.6 238.1 239.2
- meninges brain cerebral cranial intracranial 192.1 198.4 225.2 237.6 239.7
- spinal cord 192.3 198.4 225.4 237.6 239.7
- motor tract 192.9 198.4 225.9 237.9 239.7
- brain 191.9 198.3 225.0 237.5 239.6
- spinal 192.2 198.3 225.3 237.5 239.7
- muscle SEE ALSO See Also
A “see also” instruction following a main term in the index instructs that there is another main term that may also be referenced that may provide additional index entries that may be useful. It is not necessary to follow the “see also” note when the original main term provides the necessary code. Neoplasm conNEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular.tive tissue extraocular 190.1 198.4 234.0 224.1 238.8 239.89
- nasolacrimal duct 190.7 198.4 234.0 224.7 238.8 239.89
- nerve autonomic ganglion parasympathetic peripheral sympathetic SEE ALSO See Also
A “see also” instruction following a main term in the index instructs that there is another main term that may also be referenced that may provide additional index entries that may be useful. It is not necessary to follow the “see also” note when the original main term provides the necessary code. Neoplasm conNEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular.tive tissue- abducens 192.0 198.4 225.1 237.9 239.7
- accessory spinal 192.0 198.4 225.1 237.9 239.7
- acoustic 192.0 198.4 225.1 237.9 239.7
- auditory 192.0 198.4 225.1 237.9 239.7
- cranial any 192.0 198.4 225.1 237.9 239.7
- facial 192.0 198.4 225.1 237.9 239.7
- glossopharyngeal 192.0 198.4 225.1 237.9 239.7
- hypoglossal 192.0 198.4 225.1 237.9 239.7
- oculomotor 192.0 198.4 225.1 237.9 239.7
- olfactory 192.0 198.4 225.1 237.9 239.7
- optic 192.0 198.4 225.1 237.9 239.7
- trigeminal 192.0 198.4 225.1 237.9 239.7
- trochlear 192.0 198.4 225.1 237.9 239.7
- vagus 192.0 198.4 225.1 237.9 239.7
- nervous system central NEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular. 192.9 198.4 225.9 237.9 239.7- autonomic NEC NEC "Not elsewhere classifiable"
This abbreviation in the index represents “other specified” when a specific code is not available for a condition the index directs the coder to the “other specified” code in the tabular. 171.9 198.89 215.9 238.1 239.2
- brain SEE ALSO See Also
A “see also” instruction following a main term in the index instructs that there is another main term that may also be referenced that may provide additional index entries that may be useful. It is not necessary to follow the “see also” note when the original main term provides the necessary code. Neoplasm brain membrane or meninges 192.1 198.4 225.2 237.6 239.7
- contiguous sites 192.8
- autonomic NEC NEC "Not elsewhere classifiable"
- olfactory nerve or bulb 192.0 198.4 225.1 237.9 239.7
- optic nerve chiasm or tract 192.0 198.4 225.1 237.9 239.7
- orbit 190.1 198.4 234.0 224.1 238.8 239.89
- bone 170.0 198.5 213.0 238.0 239.2
- eye 190.1 198.4 234.0 224.1 238.8 239.89
- soft parts 190.1 198.4 234.0 224.1 238.8 239.89
- parasellar 192.9 198.4 225.9 237.9 239.7
- pia mater cerebral cranial 192.1 198.4 225.2 237.6 239.7
- spinal 192.3 198.4 225.4 237.6 239.7
- retina 190.5 198.4 234.0 224.5 238.8 239.81
- retrobulbar 190.1 198.4 224.1 238.8 239.89
- sclera 190.0 198.4 234.0 224.0 238.8 239.89
- spine spinal column 170.2 198.5 213.2 238.0 239.2
- dura mater 192.3 198.4 225.4 237.6 239.7
- membrane 192.3 198.4 225.4 237.6 239.7
- meninges 192.3 198.4 225.4 237.6 239.7
- pia mater 192.3 198.4 225.4 237.6 239.7
- subdural 192.1 198.4 225.2 237.6 239.7
- tentorium cerebelli 192.1 198.4 225.2 237.6 239.7
- uveal tract 190.0 198.4 234.0 224.0 238.8 239.89
ICD-9 Footnotes
General Equivalence Map Definitions
The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
- Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
- No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
- Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.
Index of Diseases and Injuries Definitions
- And - The word "and" should be interpreted to mean either "and" or "or" when it appears in a title.
- Code also note - A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
- Code first - Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- Type 1 Excludes Notes - A type 1 Excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- Type 2 Excludes Notes - A type 2 Excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- Includes Notes - This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- Inclusion terms - List of terms is included under some codes. These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- NEC "Not elsewhere classifiable" - This abbreviation in the Alphabetic Index represents "other specified". When a specific code is not available for a condition, the Alphabetic Index directs the coder to the "other specified” code in the Tabular List.
- NOS "Not otherwise specified" - This abbreviation is the equivalent of unspecified.
- See - The "see" instruction following a main term in the Alphabetic Index indicates that another term should be referenced. It is necessary to go to the main term referenced with the "see" note to locate the correct code.
- See Also - A "see also" instruction following a main term in the Alphabetic Index instructs that there is another main term that may also be referenced that may provide additional Alphabetic Index entries that may be useful. It is not necessary to follow the "see also" note when the original main term provides the necessary code.
- 7th Characters - Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- With - The word "with" should be interpreted to mean "associated with" or "due to" when it appears in a code title, the Alphabetic Index, or an instructional note in the Tabular List. The word "with" in the Alphabetic Index is sequenced immediately following the main term, not in alphabetical order.