G40.842 ICD-10-CM Code: KCNQ2-related epilepsy, not intractable, without status epilepticus

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for G40.842 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on G40.842 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for G40.842

MedCoder structured workflow — derived from this code’s own official record

Before you code G40.842

1. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with G40.842. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

   See the official tabular notes

Choose the right path

1. Does the documentation support a condition named in G40.842’s Excludes1 note?
   Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
   No → Continue.

   ReviewF44.5, R56.9, R56.1, P90

Consider G40.842. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement

Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

The associated condition or complication

Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).

Official instructions as workflow

• Excludes1 — check before selecting G40.842(5 notes)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with G40.842: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  CompareF44.5, R56.9, R56.1, P90

  See the official tabular notes · Guidelines I.A.12.a

• Excludes2 — not part of G40.842(4 notes)

  Coding workflow: The conditions named in this note are not included in G40.842. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareG93.81, G83.84

  See the official tabular notes · Guidelines I.A.12.b

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Indexed Clinical Terms (3)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure), KCNQ2-related
• Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure), KCNQ2-related, not intractable
• Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure), KCNQ2-related, not intractable, without status epilepticus

Don’t confuse G40.842 with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of G40.842 — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• F44.5— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of conversion disorder with seizures moves the case to F44.5; the two are not reported together unless documented as unrelated.

  Full comparison: G40.842 vs F44.5 →

• R56.9— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of convulsions NOS moves the case to R56.9; the two are not reported together unless documented as unrelated.

  Full comparison: G40.842 vs R56.9 →

• R56.1— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of post traumatic seizures moves the case to R56.1; the two are not reported together unless documented as unrelated.

  Full comparison: G40.842 vs R56.1 →

• P90— Excludes1 conflict (Excludes1 — generally not reported together)

  Not coded here — the tabular list excludes this pair for the same encounter.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of seizure of newborn moves the case to P90; the two are not reported together unless documented as unrelated.

  Full comparison: G40.842 vs P90 →

• G93.81— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of hippocampal sclerosis adds G93.81; it is not part of this code and both may be reported when both are documented.

  Full comparison: G40.842 vs G93.81 →

• G83.84— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of Todd's paralysis adds G83.84; it is not part of this code and both may be reported when both are documented.

  Full comparison: G40.842 vs G83.84 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

Verify Before Coding

• CC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

Other codes that name G40.842 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

Referenced by 3 Excludes1 notes across 2 chapters: G25.3 — Myoclonus (via G40.-), R56 — Convulsions, not elsewhere classified (via G40.-), R56.1 — Post traumatic seizures (via G40.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

Referenced by 2 Excludes2 notes: F44.0 — Dissociative amnesia (via G40.-), F44.1 — Dissociative fugue (via G40.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Referenced by 1 Code First instruction: F02 — Dementia in other diseases classified elsewhere (via G40.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

Referenced by 2 Use Additional Code instructions: Q87.87 — Hao-Fountain Syndrome (via G40.-), Q93.52 — Phelan-McDermid syndrome (via G40.-).

These codes instruct coders to additionally report this code when it applies.

Referenced by 9 Code Also instructions across 6 chapters: E20.810 — Autosomal dominant hypocalcemia (via G40.-), F78.A1 — SYNGAP1-related intellectual disability (via G40.-), G04.8 — Other encephalitis, myelitis and encephalomyelitis (via G40.-), G43.1 — Migraine with aura (via G40.-), G93.45 — Developmental and epileptic encephalopathy (via G40.-), I67.850 — Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (via G40.-), Q87.85 — MED13L syndrome (via G40.-), QA0 — Neurodevelopmental disorders related to specific genetic pathogenic variants (via G40.-), Z15.1 — Genetic susceptibility to epilepsy and neurodevelopmental disorders (via G40.-).

These codes suggest coding this condition alongside when both are present.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: CC — Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 89 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 3 MS-DRGs: DRG 023 (MDC 01), DRG 100 (MDC 01), DRG 101 (MDC 01).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):NVS009 — Epilepsy; convulsions (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

Acts as CC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

G40.812 — Lennox-Gastaut syndrome, not intractable, without status epilepticus, G40.813 — Lennox-Gastaut syndrome, intractable, with status epilepticus, G40.814 — Lennox-Gastaut syndrome, intractable, without status epilepticus, G40.821 — Epileptic spasms, not intractable, with status epilepticus, G40.822 — Epileptic spasms, not intractable, without status epilepticus, G40.823 — Epileptic spasms, intractable, with status epilepticus, G40.824 — Epileptic spasms, intractable, without status epilepticus, G40.833 — Dravet syndrome, intractable, with status epilepticus, G40.834 — Dravet syndrome, intractable, without status epilepticus, G40.841 — KCNQ2-related epilepsy, not intractable, with status epilepticus, G40.843 — KCNQ2-related epilepsy, intractable, with status epilepticus, G40.844 — KCNQ2-related epilepsy, intractable, without status epilepticus, G40.89 — Other seizures, G40.901 — Epilepsy, unspecified, not intractable, with status epilepticus, G40.909 — Epilepsy, unspecified, not intractable, without status epilepticus, G40.911 — Epilepsy, unspecified, intractable, with status epilepticus, G40.919 — Epilepsy, unspecified, intractable, without status epilepticus, G40.A01 — Absence epileptic syndrome, not intractable, with status epilepticus, G40.A09 — Absence epileptic syndrome, not intractable, without status epilepticus, G40.A11 — Absence epileptic syndrome, intractable, with status epilepticus, +68 more

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Seizure Disorders and Convulsions) for risk-adjusted payment.

G40.812 — Lennox-Gastaut syndrome, not intractable, without status epilepticus, G40.813 — Lennox-Gastaut syndrome, intractable, with status epilepticus, G40.814 — Lennox-Gastaut syndrome, intractable, without status epilepticus, G40.821 — Epileptic spasms, not intractable, with status epilepticus, G40.822 — Epileptic spasms, not intractable, without status epilepticus, G40.823 — Epileptic spasms, intractable, with status epilepticus, G40.824 — Epileptic spasms, intractable, without status epilepticus, G40.833 — Dravet syndrome, intractable, with status epilepticus, G40.834 — Dravet syndrome, intractable, without status epilepticus, G40.841 — KCNQ2-related epilepsy, not intractable, with status epilepticus, G40.843 — KCNQ2-related epilepsy, intractable, with status epilepticus, G40.844 — KCNQ2-related epilepsy, intractable, without status epilepticus, G40.89 — Other seizures, G40.901 — Epilepsy, unspecified, not intractable, with status epilepticus, G40.909 — Epilepsy, unspecified, not intractable, without status epilepticus, G40.911 — Epilepsy, unspecified, intractable, with status epilepticus, G40.919 — Epilepsy, unspecified, intractable, without status epilepticus, G40.A01 — Absence epileptic syndrome, not intractable, with status epilepticus, G40.A09 — Absence epileptic syndrome, not intractable, without status epilepticus, G40.A11 — Absence epileptic syndrome, intractable, with status epilepticus, +43 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Epilepsy; convulsions).

G40.812 — Lennox-Gastaut syndrome, not intractable, without status epilepticus, G40.813 — Lennox-Gastaut syndrome, intractable, with status epilepticus, G40.814 — Lennox-Gastaut syndrome, intractable, without status epilepticus, G40.821 — Epileptic spasms, not intractable, with status epilepticus, G40.822 — Epileptic spasms, not intractable, without status epilepticus, G40.823 — Epileptic spasms, intractable, with status epilepticus, G40.824 — Epileptic spasms, intractable, without status epilepticus, G40.833 — Dravet syndrome, intractable, with status epilepticus, G40.834 — Dravet syndrome, intractable, without status epilepticus, G40.841 — KCNQ2-related epilepsy, not intractable, with status epilepticus, G40.843 — KCNQ2-related epilepsy, intractable, with status epilepticus, G40.844 — KCNQ2-related epilepsy, intractable, without status epilepticus, G40.89 — Other seizures, G40.901 — Epilepsy, unspecified, not intractable, with status epilepticus, G40.909 — Epilepsy, unspecified, not intractable, without status epilepticus, G40.911 — Epilepsy, unspecified, intractable, with status epilepticus, G40.919 — Epilepsy, unspecified, intractable, without status epilepticus, G40.A01 — Absence epileptic syndrome, not intractable, with status epilepticus, G40.A09 — Absence epileptic syndrome, not intractable, without status epilepticus, G40.A11 — Absence epileptic syndrome, intractable, with status epilepticus, +42 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Epilepsy, epileptic, epilepsia”; these codes share that main term but sit in a different category of the Tabular List.

A52.19 — Other symptomatic neurosyphilis (due to syphilis), B69.0 — Cysticercosis of central nervous system (cysticercosis), B71.9 — Cestode infection, unspecified (parasitic NOS), F05 — Delirium due to known physiological condition (twilight), F06.8 — Other specified mental disorders due to known physiological condition (deterioration)

Contextual Map

Every relationship of G40.842 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Run G40.842 with these 16 related codes in Claim Check

Hierarchy

• G00-G99 — Chapter 6: Diseases of the Nervous System (G00-G99) (G00-G99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40-G47 — Episodic and paroxysmal disorders[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

• G25.3 — Myoclonus[Excludes1](via G40.-): “myoclonic epilepsy (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• R56 — Convulsions, not elsewhere classified[Excludes1](via G40.-): “epileptic convulsions and seizures (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• R56.1 — Post traumatic seizures[Excludes1](via G40.-): “post traumatic epilepsy (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes

• F44.0 — Dissociative amnesia[Excludes2](via G40.-): “postictal amnesia in epilepsy (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• F44.1 — Dissociative fugue[Excludes2](via G40.-): “postictal fugue in epilepsy (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code First instructions

• F02 — Dementia in other diseases classified elsewhere[Code First](via G40.-): “epilepsy and recurrent seizures (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Use Additional Code instructions

• Q87.87 — Hao-Fountain Syndrome[Use Additional Code](via G40.-): “epilepsy, by specific type (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• Q93.52 — Phelan-McDermid syndrome[Use Additional Code](via G40.-): “epilepsy and recurrent seizures (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Code Also instructions (9)

• E20.810 — Autosomal dominant hypocalcemia[Code Also](via G40.-): “seizure disorder (G40.-, R56.9)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• F78.A1 — SYNGAP1-related intellectual disability[Code Also](via G40.-): “epilepsy and recurrent seizures (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• G04.8 — Other encephalitis, myelitis and encephalomyelitis[Code Also](via G40.-): “any associated seizure (G40.-, R56.9)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• G43.1 — Migraine with aura[Code Also](via G40.-): “any associated seizure (G40.-, R56.9)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• G93.45 — Developmental and epileptic encephalopathy[Code Also](via G40.-): “epilepsy, by specific type (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• I67.850 — Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy[Code Also](via G40.-): “epilepsy (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• Q87.85 — MED13L syndrome[Code Also](via G40.-): “epilepsy and recurrent seizures (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• QA0 — Neurodevelopmental disorders related to specific genetic pathogenic variants[Code Also](via G40.-): “epilepsy, by specific type (G40.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• and 1 more

Clinical classification (CCSR)

• NVS009 — Epilepsy; convulsions[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

Risk adjustment (CMS-HCC)

• HCC 201 — Seizure Disorders and Convulsions [CMS-HCC]— CMS-HCC V28 · 2026

MS-DRG Grouper

• CC — Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (CC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2026
• DRG 023 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR[MS-DRG]: “CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 100 — SEIZURES WITH MCC[MS-DRG]: “SEIZURES WITH MCC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 101 — SEIZURES WITHOUT MCC[MS-DRG]: “SEIZURES WITHOUT MCC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• MDC 01 — Diseases and Disorders of the Nervous System[MDC crossing]: “Diseases and Disorders of the Nervous System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs. 8,892 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure), KCNQ2-related[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure), KCNQ2-related, not intractable[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure), KCNQ2-related, not intractable, without status epilepticus[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (40)

• G40 — Epilepsy and recurrent seizures[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40.80 — Other epilepsy[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40.801 — Other epilepsy, not intractable, with status epilepticus[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40.802 — Other epilepsy, not intractable, without status epilepticus[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40.803 — Other epilepsy, intractable, with status epilepticus[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40.804 — Other epilepsy, intractable, without status epilepticus[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40.81 — Lennox-Gastaut syndrome[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G40.811 — Lennox-Gastaut syndrome, not intractable, with status epilepticus[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 32 more

Change history

• FY2025 — Added to the code set[Change history]— CMS release files (code change ledger) · icd10cm-fy2025

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page

Inpatient payment groups Official source data

CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page

Risk adjustment Official source data

2026 Mid-Year Final ICD-10 Mappings + Model Software (cms.gov/files/zip/2026-midyear-final-icd-10-mappings.zip, 2026-midyear-final-model-software.zip) — CMS-HCC V28, PY2026 mid-year final release Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to G40.842 in its code family, with their registry titles.

• G40.83 — Dravet syndrome
• G40.833 — Dravet syndrome, intractable, with status epilepticus
• G40.834 — Dravet syndrome, intractable, without status epilepticus
• G40.84 — KCNQ2-related epilepsy
• G40.841 — KCNQ2-related epilepsy, not intractable, with status epilepticus
• G40.843 — KCNQ2-related epilepsy, intractable, with status epilepticus
• G40.844 — KCNQ2-related epilepsy, intractable, without status epilepticus
• G40.89 — Other seizures
• G40.9 — Epilepsy, unspecified
• G40.90 — Epilepsy, unspecified, not intractable

View all codes in the G40 family