2027 ICD-10-CM Diagnosis Code M79.2Neuralgia and neuritis, unspecified
ICD-10-CM Codes›M00–M99›M70-M79›M79
- Billable — Valid for Submission
- Not Chronic
M79.2 is a billable ICD-10-CM diagnosis code for neuralgia and neuritis, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 73 through 74. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified connective tissue disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Atypical neuralgia
- Autoimmune neuritis
- Autoimmune neuritis of nerve root and/or plexus
- Autosomal dominant intermediate Charcot-Marie-Tooth disease with neuropathic pain
- Central neuropathic pain
- Chronic central neuropathic pain
- Chronic central neuropathic pain due to brain injury
- Chronic central neuropathic pain due to multiple sclerosis
- Chronic central neuropathic pain due to spinal cord injury
- Chronic neuropathic pain
- Chronic neuropathic pain following brain injury
- Chronic neuropathic pain following spinal cord injury
- Chronic pain due to injury
- Chronic peripheral neuropathic pain
- Chronic peripheral neuropathic pain following peripheral nerve injury
- Cluster tic syndrome
- Fungal neuritis
- Inflammation of peripheral nerve of left lower limb
- Inflammation of peripheral nerve of right lower limb
- Lateral femoral cutaneous neuralgia
- Left foot neuritis
- Neuralgia
- Neuralgia co-occurrent with human immunodeficiency virus infection
- Neuralgia of left upper limb
- Neuralgia of right upper limb
- Neuralgia with AIDS
- Neuritis co-occurrent with human immunodeficiency virus infection
- Neuritis of bilateral feet
- Neuritis with AIDS
- Neurogenic pain
- Neurological pain disorder
- Neuropathic pain
- Neuropathic pain caused by radiation
- Neuropathy of upper limb due to inflammatory disease
- Orofacial neuropathic pain
- Peripheral neuralgia
- Peripheral neurogenic pain
- Peripheral neuropathic pain
- Peripheral neuropathy due to inflammation
- Postinfectious neuralgia
- Postinfective peripheral neuralgia
- Postinfective segmental neuralgia
- Reminiscent neuralgia
- Right foot neuritis
- Segmental neuralgia as late effect of traumatic injury
- Segmental peripheral neuralgia
- Supraorbital neuralgia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to M79.2: its own notes plus those printed at M79 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name M79.2, its category, or a range that includes it.
Excludes1 6
These codes carry an Excludes1 note naming M79.2: they are not reported together with it, unless the two conditions are unrelated.
- Block G50-G59 Nerve, nerve root and plexus disordersneuralgia NOS (M79.2)
- Block G50-G59 Nerve, nerve root and plexus disordersneuritis NOS (M79.2)
- G54 Nerve root and plexus disordersneuralgia or neuritis NOS (M79.2)
- Block G60-G65 Polyneuropathies and other disorders of the peripheral nervous systemneuralgia NOS (M79.2)
- Block G60-G65 Polyneuropathies and other disorders of the peripheral nervous systemneuritis NOS (M79.2)
- M54.1 Radiculopathyneuralgia and neuritis NOS (M79.2)
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Neuritis (rheumatoid) M79.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Neuralgia
intense or aching pain that occurs along the course or distribution of a peripheral or cranial nerve.Neuritis
a general term indicating inflammation of a peripheral or cranial nerve. clinical manifestation may include pain; paresthesias; paresis; or hypesthesia.
Patient EducationClinical
Pain
Pain is a signal in your nervous system that something may be wrong. It is an unpleasant feeling, such as a prick, tingle, sting, burn, or ache. Each person feels pain differently, even if the reason for the pain is the same. Pain may be sharp or dull. It may be mild or severe. Pain may come and go, or it may be constant.
The full article covers:
- What is pain?
- What are the types of pain?
- What causes pain?
- How is pain diagnosed?
- What are the treatments for pain?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert M79.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About M79.2Overview
What is the ICD-10 code for neuralgia and neuritis, unspecified?
The ICD-10-CM code for neuralgia and neuritis, unspecified is M79.2 (sometimes written as M792). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is M79.2 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report neuralgia and neuritis, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does M79.2 group to?
When neuralgia and neuritis, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 74, 73, with relative weights from 1.0172 to 1.5773 depending on complications. Higher weights mean higher Medicare reimbursement.
Can M79.2 be reported with M54.1?
Not as a rule. The Excludes1 note on M79.2 lists "brachial radiculitis NOS (M54.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of M79.2?
Under the General Equivalence Mappings, neuralgia and neuritis, unspecified converts to ICD-9-CM 729.2 (neuralgia/neuritis NOS). The mapping is approximate, so confirm the match fits the documentation.
