ICD-9 Code 349.9
Unspecified disorders of nervous system
Not Valid for Submission
349.9 is a legacy non-billable code used to specify a medical diagnosis of unspecified disorders of nervous system. This code was replaced on September 30, 2015 by its ICD-10 equivalent.
ICD-9: | 349.9 |
Short Description: | Cns disorder NOS |
Long Description: | Unspecified disorders of nervous system |
Convert 349.9 to ICD-10
The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:
- G96.9 - Disorder of central nervous system, unspecified
Code Classification
-
Diseases of the nervous system (320–359)
-
Other disorders of the central nervous system (340-349)
- 349 Other and unspecified disorders of the nervous system
-
Other disorders of the central nervous system (340-349)
Information for Medical Professionals
Index to Diseases and Injuries
References found for the code 349.9 in the Index of Diseases and Injuries:
- Arthritis arthritic acute chronic subacute 716.9
- due to or associated with
- neuropathic Charc t s 094.0 713.5
- Arthropathy 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. Arthritis 716.9- neurogenic neuropathic Charc t s tabetic 094.0 713.5
- Deficiency deficient
- central nervous system 349.9
- Disease diseased 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. Syndrome- cerebrospinal 349.9
- nervous system central 349.9
- autonomic peripheral 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. Neuropathy peripheral autonomic 337.9
- congenital 742.9
- inflammatory see Encephalitis
- parasympathetic 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. Neuropathy peripheral autonomic 337.9
- 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. Neuropathy peripheral autonomic 337.9
- vegetative 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. Neuropathy peripheral autonomic 337.9
- autonomic peripheral SEE ALSO See Also
- neurologic 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. 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. Disease nervous system 349.9
- Disorder 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. Disease- nerve 349.9
- accessory 352.4
- acoustic 388.5
- auditory 388.5
- auriculotemporal 350.8
- axillary 353.0
- cerebral see Disorder nerve cranial
- cranial 352.9
- first 352.0
- second 377.49
- third
- partial 378.51
- total 378.52
- fourth 378.53
- fifth 350.9
- sixth 378.54
- eighth 388.5
- ninth 352.2
- tenth 352.3
- eleventh 352.4
- twelfth 352.5
- multiple 352.6
- entrapment see Neuropathy entrapment
- facial 351.9
- femoral 355.2
- glossopharyngeal 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. 352.2
- hypoglossal 352.5
- iliohypogastric 355.79
- ilioinguinal 355.79
- intercostal 353.8
- lateral
- cutaneous of thigh 355.1
- popliteal 355.3
- medial popliteal 355.4
- obturator 355.79
- oculomotor
- partial 378.51
- total 378.52
- olfactory 352.0
- optic 377.49
- hypoplasia 377.43
- ischemic 377.41
- nutritional 377.33
- toxic 377.34
- peroneal 355.3
- phrenic 354.8
- plantar 355.6
- pneumogastric 352.3
- posterior tibial 355.5
- radial 354.3
- recurrent laryngeal 352.3
- root 353.9
- saphenous 355.79
- specified 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. 355.9- lower limb 355.79
- upper limb 354.8
- spinal 355.9
- trigeminal 350.9
- trochlear 378.53
- ulnar 354.2
- vagus 352.3
- nervous system 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. 349.9- autonomic peripheral 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. Neuropathy peripheral autonomic 337.9
- cranial 352.9
- parasympathetic 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. Neuropathy peripheral autonomic 337.9
- 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. 349.89
- 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. Neuropathy peripheral autonomic 337.9
- vegetative 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. Neuropathy peripheral autonomic 337.9
- autonomic peripheral SEE ALSO See Also
- nerve 349.9
- Encephalomeningopathy 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. Meningoencephalitis 349.9 - Encephalomyeloneuropathy 349.9
- Encephalomyelopathy 349.9
- Encephalomyeloradiculopathy 349.9
- Lesion s
- nervous system 349.9
- congenital 742.9
- nervous system 349.9
- Meningoencephalomyelopathy 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. Meningoencephalomyelitis 349.9
Information for Patients
Neurologic Diseases
The brain, spinal cord, and nerves make up the nervous system. Together they control all the workings of the body. When something goes wrong with a part of your nervous system, you can have trouble moving, speaking, swallowing, breathing, or learning. You can also have problems with your memory, senses, or mood.
There are more than 600 neurologic diseases. Major types include:
- Diseases caused by faulty genes, such as Huntington's disease and muscular dystrophy
- Problems with the way the nervous system develops, such as spina bifida
- Degenerative diseases, where nerve cells are damaged or die, such as Parkinson's disease and Alzheimer's disease
- Diseases of the blood vessels that supply the brain, such as stroke
- Injuries to the spinal cord and brain
- Seizure disorders, such as epilepsy
- Cancer, such as brain tumors
- infections, such as meningitis
[Read More]
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.