ICD-9 Code 355.9
Mononeuritis of unspecified site
Not Valid for Submission
355.9 is a legacy non-billable code used to specify a medical diagnosis of mononeuritis of unspecified site. This code was replaced on September 30, 2015 by its ICD-10 equivalent.
ICD-9: | 355.9 |
Short Description: | Mononeuritis NOS |
Long Description: | Mononeuritis of unspecified site |
Convert 355.9 to ICD-10
The following crosswalk between ICD-9 to ICD-10 is based based on the General Equivalence Mappings (GEMS) information:
- G58.9 - Mononeuropathy, unspecified
Code Classification
-
Diseases of the nervous system (320–359)
-
Disorders of the peripheral nervous system (350-359)
- 355 Mononeuritis of lower limb
-
Disorders of the peripheral nervous system (350-359)
Information for Medical Professionals
Index to Diseases and Injuries
References found for the code 355.9 in the Index of Diseases and Injuries:
- Adhesion s adhesive postinfectional postoperative
- nerve 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- spinal 355.9
- root 724.9
- lumbosacral 724.4
- thoracic 724.4
- root 724.9
- spinal 355.9
- spinal canal 349.2
- nerve 355.9
- root 724.9
- lumbosacral 724.4
- thoracic 724.4
- root 724.9
- nerve 355.9
- nerve NEC NEC "Not elsewhere classifiable"
- Angiospasm 443.9
- nerve
- Atrophy atrophic
- nerve 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. Disorder nerve- peripheral 355.9
- neuritic 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. Disorder nerve 355.9
- neurogenic 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- bone
- tabetic 094.0
- bone
- paralysis 355.9
- nerve SEE ALSO See Also
- Causalgia 355.9
- lower limb 355.71
- upper limb 354.4
- Change s of 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. Removal of- peripheral nerve 355.9
- Complex
- regional pain syndrome 355.9
- type I 337.20
- lower limb 337.22
- specified site 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. 337.29
- upper limb 337.21
- type II
- lower limb 355.71
- upper limb 354.4
- type I 337.20
- regional pain syndrome 355.9
- Cyst mucus retention serous simple
- perineural Tarlov s 355.9
- Tarlov s 355.9
- Diabetes diabetic brittle congenital familial mellitus severe slight without complication 250.0
- mononeuropathy 250.6 355.9
- due to secondary diabetes 249.6 355.9
- secondary chemical induced due to chronic condition due to infection drug induced 249.0
- mononeuropathy 249.6 355.9
- mononeuropathy 250.6 355.9
- 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- nervous system central 349.9
- 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
- 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
- specified NEC NEC "Not elsewhere classifiable"
- nerve 349.9
- Fibrosis fibrotic
- Lesion s
- nerve 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. Disorder nerve 355.9
- nerve SEE ALSO See Also
- Mononeuritis 355.9
- cranial nerve see Disorder nerve cranial
- femoral nerve 355.2
- lateral
- cutaneous nerve of thigh 355.1
- popliteal nerve 355.3
- lower limb 355.8
- medial popliteal nerve 355.4
- median nerve 354.1
- multiplex 354.5
- plantar nerve 355.6
- posterior tibial nerve 355.5
- radial nerve 354.3
- sciatic nerve 355.0
- ulnar nerve 354.2
- upper limb 354.9
- vestibular 388.5
- Mononeuropathy 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. Mononeuritis 355.9- diabetic 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. 250.6 355.9- due to secondary diabetes 249.6 355.9
- lower limb 250.6 355.8
- due to secondary diabetes 249.6 355.8
- upper limb 250.6 354.9
- due to secondary diabetes 249.6 354.9
- iliohypogastric nerve 355.79
- ilioinguinal nerve 355.79
- obturator nerve 355.79
- saphenous nerve 355.79
- diabetic NEC NEC "Not elsewhere classifiable"
- Neuritis 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. Neuralgia 729.2- spinal nerve 355.9
- Neuroma M9570 0 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 benign- nonneoplastic 355.9
- lower extremity 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. 355.8
- lower extremity NEC NEC "Not elsewhere classifiable"
- surgical nonneoplastic 355.9
- nonneoplastic 355.9
- Neuropathy neuropathic 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. Disorder nerve 355.9- acute motor 357.82
- alcoholic 357.5
- with psychosis 291.1
- ataxia and retinitis pigmentosa NARP syndrome 277.87
- autonomic peripheral see Neuropathy peripheral autonomic
- axillary nerve 353.0
- brachial plexus 353.0
- cervical plexus 353.2
- chronic
- progressive segmentally demyelinating 357.89
- relapsing demyelinating 357.89
- congenital sensory 356.2
- D j rine Sottas 356.0
- diabetic 250.6 357.2
- autonomic peripheral 250.6 337.1
- due to secondary diabetes 249.6 357.2
- autonomic peripheral 249.6 337.1
- entrapment 355.9
- iliohypogastric nerve 355.79
- ilioinguinal nerve 355.79
- lateral cutaneous nerve of thigh 355.1
- median nerve 354.0
- obturator nerve 355.79
- peroneal nerve 355.3
- posterior tibial nerve 355.5
- saphenous nerve 355.79
- ulnar nerve 354.2
- facial nerve 351.9
- hereditary 356.9
- peripheral 356.0
- sensory radicular 356.2
- hypertrophic
- Charc t Marie Tooth 356.1
- D j rine Sottas 356.0
- interstitial 356.9
- Refsum 356.3
- intercostal nerve 354.8
- ischemic see Disorder nerve
- Jamaican ginger 357.7
- lower extremity 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. 355.8
- lumbar plexus 353.1
- median nerve 354.1
- motor
- acute 357.82
- multiple acute chronic 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. Polyneuropathy 356.9
- optic 377.39
- ischemic 377.41
- nutritional 377.33
- toxic 377.34
- peripheral nerve 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. Polyneuropathy 356.9- autonomic 337.9
- amyloid 277.39 337.1
- idiopathic 337.00
- in
- amyloidosis 277.39 337.1
- diabetes mellitus 250.6 337.1
- due to secondary diabetes 249.6 337.1
- diseases classified elsewhere 337.1
- gout 274.89 337.1
- hyperthyroidism 242.9 337.1
- due to
- antitetanus serum 357.6
- arsenic 357.7
- drugs 357.6
- lead 357.7
- organophosphate compounds 357.7
- hereditary 356.0
- idiopathic 356.9
- progressive 356.4
- in diseases classified elsewhere see Polyneuropathy in
- autonomic 337.9
- plantar nerves 355.6
- progressive
- hypertrophic interstitial 356.9
- inflammatory 357.89
- radicular 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. 729.2- brachial 723.4
- hereditary sensory 356.2
- lumbar 724.4
- lumbosacral 724.4
- sacral plexus 353.1
- sciatic 355.0
- toxic 357.7
- trigeminal sensory 350.8
- ulnar nerve 354.2
- upper extremity 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. 354.9
- uremic 585.9 357.4
- vitamin B12 266.2 357.4
- with anemia pernicious 281.0 357.4
- due to dietary deficiency 281.1 357.4
- with anemia pernicious 281.0 357.4
- Paralysis paralytic complete incomplete 344.9
- abdomen and back muscles 355.9
- abdominal muscles 355.9
- abductor 355.9
- lower extremity 355.8
- upper extremity 354.9
- anterior serratus 355.9
- atrophic 356.9
- interosseous 355.9
- local 355.9
- muscle flaccid 359.9
- peripheral
- pressure 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 entrapment 355.9
- serratus magnus 355.9
- Pressure
- paralysis 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 entrapment 355.9
- paralysis SEE ALSO See Also
- Syndrome 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- causalgia 355.9
- lower limb 355.71
- upper limb 354.4
- pain 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. Pain- complex regional 355.9
- type I 337.20
- lower limb 337.22
- specified site 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. 337.29
- upper limb 337.21
- type II
- lower limb 355.71
- upper limb 354.4
- type I 337.20
- complex regional 355.9
- causalgia 355.9
- Tarlov s cyst 355.9
Information for Patients
Complex Regional Pain Syndrome
Complex regional pain syndrome (CRPS) is a chronic pain condition. It causes intense pain, usually in the arms, hands, legs, or feet. It may happen after an injury, either to a nerve or to tissue in the affected area. Rest and time may only make it worse.
Symptoms in the affected area are:
- Dramatic changes in skin temperature, color, or texture
- Intense burning pain
- Extreme skin sensitivity
- Swelling and stiffness in affected joints
- Decreased ability to move the affected body part
The cause of CRPS is unknown. There is no specific diagnostic test. Your doctor will diagnose CRPS based on your signs and symptoms.
There is no cure. It can get worse over time, and may spread to other parts of the body. Occasionally the symptoms go away, either temporarily or for good. Treatment focuses on relieving the pain, and can include medicines, physical therapy, and nerve blocks.
NIH: National Institute of Neurological Disorders and Stroke
[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.