G83.5 ICD-10-CM Code: Locked-in state

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for G83.5 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 G83.5 itself; “inherited from” names the category or block whose note applies here.

Indexed Clinical Terms (2)

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.

• Locked-in state
• State (of), locked-in

Don’t confuse G83.5 with…

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

The codes most likely to be picked instead of G83.5 — 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.

• G83.3— Specificity relationship (Review)

  Overlapping diagnoses in the same category.

  Overlapping codes in the same category — the documentation decides which is the more specific fit.

  What moves you there: A record that documents no more than “Monoplegia, unspecified” takes G83.3; specificity in the record moves it back here.

  Full comparison: G83.5 vs G83.3 →

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

• MCC 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 G83.5 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 6 Use Additional Code instructions: I69.06 — Other paralytic syndrome following nontraumatic subarachnoid hemorrhage, I69.16 — Other paralytic syndrome following nontraumatic intracerebral hemorrhage, I69.26 — Other paralytic syndrome following other nontraumatic intracranial hemorrhage, I69.36 — Other paralytic syndrome following cerebral infarction, I69.86 — Other paralytic syndrome following other cerebrovascular disease, I69.96 — Other paralytic syndrome following unspecified cerebrovascular disease.

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

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: MCC — Major 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 70 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 3 MS-DRGs: DRG 091 (MDC 01), DRG 092 (MDC 01), DRG 093 (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):NVS008 — Paralysis (other than cerebral palsy) (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 MCC — 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.

G83.21 — Monoplegia of upper limb affecting right dominant side, G83.22 — Monoplegia of upper limb affecting left dominant side, G83.23 — Monoplegia of upper limb affecting right nondominant side, G83.24 — Monoplegia of upper limb affecting left nondominant side, G83.30 — Monoplegia, unspecified affecting unspecified side, G83.31 — Monoplegia, unspecified affecting right dominant side, G83.32 — Monoplegia, unspecified affecting left dominant side, G83.33 — Monoplegia, unspecified affecting right nondominant side, G83.34 — Monoplegia, unspecified affecting left nondominant side, G83.4 — Cauda equina syndrome, G83.81 — Brown-Séquard syndrome, G83.82 — Anterior cord syndrome, G83.83 — Posterior cord syndrome, G83.84 — Todd's paralysis (postepileptic), G83.89 — Other specified paralytic syndromes, G83.9 — Paralytic syndrome, unspecified, G93.40 — Encephalopathy, unspecified, G93.41 — Metabolic encephalopathy, G93.42 — Megalencephalic leukoencephalopathy with subcortical cysts, G93.43 — Leukoencephalopathy with calcifications and cysts, +49 more

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Monoplegia, Other Paralytic Syndromes) for risk-adjusted payment.

G83.20 — Monoplegia of upper limb affecting unspecified side, G83.21 — Monoplegia of upper limb affecting right dominant side, G83.22 — Monoplegia of upper limb affecting left dominant side, G83.23 — Monoplegia of upper limb affecting right nondominant side, G83.24 — Monoplegia of upper limb affecting left nondominant side, G83.30 — Monoplegia, unspecified affecting unspecified side, G83.31 — Monoplegia, unspecified affecting right dominant side, G83.32 — Monoplegia, unspecified affecting left dominant side, G83.33 — Monoplegia, unspecified affecting right nondominant side, G83.34 — Monoplegia, unspecified affecting left nondominant side, G83.81 — Brown-Séquard syndrome, G83.82 — Anterior cord syndrome, G83.83 — Posterior cord syndrome, G83.84 — Todd's paralysis (postepileptic), G83.89 — Other specified paralytic syndromes, G83.9 — Paralytic syndrome, unspecified, I69.031 — Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting right dominant side, I69.032 — Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting left dominant side, I69.033 — Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting right non-dominant side, I69.034 — Monoplegia of upper limb following nontraumatic subarachnoid hemorrhage affecting left non-dominant side, +98 more

Related risk categories

These categories interact through CMS's HCC hierarchy — one can suppress the other's risk-adjustment weight when both are present on a claim.

Quadriplegia, Paraplegia, Hemiplegia/Hemiparesis

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Paralysis (other than cerebral palsy)).

G83.12 — Monoplegia of lower limb affecting left dominant side, G83.13 — Monoplegia of lower limb affecting right nondominant side, G83.14 — Monoplegia of lower limb affecting left nondominant side, G83.20 — Monoplegia of upper limb affecting unspecified side, G83.21 — Monoplegia of upper limb affecting right dominant side, G83.22 — Monoplegia of upper limb affecting left dominant side, G83.23 — Monoplegia of upper limb affecting right nondominant side, G83.24 — Monoplegia of upper limb affecting left nondominant side, G83.30 — Monoplegia, unspecified affecting unspecified side, G83.31 — Monoplegia, unspecified affecting right dominant side, G83.32 — Monoplegia, unspecified affecting left dominant side, G83.33 — Monoplegia, unspecified affecting right nondominant side, G83.34 — Monoplegia, unspecified affecting left nondominant side, G83.4 — Cauda equina syndrome, G83.81 — Brown-Séquard syndrome, G83.82 — Anterior cord syndrome, G83.83 — Posterior cord syndrome, G83.84 — Todd's paralysis (postepileptic), G83.89 — Other specified paralytic syndromes, G83.9 — Paralytic syndrome, unspecified, +27 more

Same Index main term, other category

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

F40.9 — Phobic anxiety disorder, unspecified (phobic), F41.0 — Panic disorder [episodic paroxysmal anxiety] (panic), F41.1 — Generalized anxiety disorder (anxiety), F42.2 — Mixed obsessional thoughts and acts (compulsive, mixed with obsessional thoughts), F42.8 — Other obsessive-compulsive disorder (compulsive), F43.0 — Acute stress reaction (crisis), F44.89 — Other dissociative and conversion disorders (confusional), F44.9 — Dissociative and conversion disorder, unspecified (dissociative), F48.1 — Depersonalization-derealization syndrome (neurotic, with depersonalization), F48.8 — Other specified nonpsychotic mental disorders (tension, specified NEC), F48.9 — Nonpsychotic mental disorder, unspecified (tension), F60.2 — Antisocial personality disorder (psychopathic), N95.1 — Menopausal and female climacteric states (menopausal, symptomatic), R40.3 — Persistent vegetative state (persistent vegetative), R45.1 — Restlessness and agitation (agitated), R45.7 — State of emotional shock and stress, unspecified (stress), Z33.1 — Pregnant state, incidental (pregnant, incidental), Z33.3 — Pregnant state, gestational carrier (pregnant, gestational carrier), Z73.0 — Burn-out (burn-out), Z78.0 — Asymptomatic menopausal state (menopausal), +14 more

Contextual Map

Every relationship of G83.5 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 G83.5 with these 6 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
• G80-G83 — Cerebral palsy and other paralytic syndromes[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Use Additional Code instructions

• I69.06 — Other paralytic syndrome following nontraumatic subarachnoid hemorrhage[Use Additional Code]: “locked-in state (G83.5)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• I69.16 — Other paralytic syndrome following nontraumatic intracerebral hemorrhage[Use Additional Code]: “locked-in state (G83.5)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• I69.26 — Other paralytic syndrome following other nontraumatic intracranial hemorrhage[Use Additional Code]: “locked-in state (G83.5)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• I69.36 — Other paralytic syndrome following cerebral infarction[Use Additional Code]: “locked-in state (G83.5)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• I69.86 — Other paralytic syndrome following other cerebrovascular disease[Use Additional Code]: “locked-in state (G83.5)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• I69.96 — Other paralytic syndrome following unspecified cerebrovascular disease[Use Additional Code]: “locked-in state (G83.5)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• NVS008 — Paralysis (other than cerebral palsy)[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

Risk adjustment (CMS-HCC)

• HCC 254 — Monoplegia, Other Paralytic Syndromes [CMS-HCC]— CMS-HCC V28 · 2026

MS-DRG Grouper

• MCC — Major Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (MCC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2026
• DRG 091 — OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC[MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 092 — OTHER DISORDERS OF NERVOUS SYSTEM WITH CC[MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITH CC (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 093 — OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC[MS-DRG]: “OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/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

• Locked-in state[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• State (of), locked-in[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (28)

• G83 — Other paralytic syndromes[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G83.0 — Diplegia of upper limbs[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G83.1 — Monoplegia of lower limb[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G83.10 — Monoplegia of lower limb affecting unspecified side[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G83.11 — Monoplegia of lower limb affecting right dominant side[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G83.12 — Monoplegia of lower limb affecting left dominant side[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G83.13 — Monoplegia of lower limb affecting right nondominant side[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• G83.14 — Monoplegia of lower limb affecting left nondominant side[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 20 more

Change history

• FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

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 G83.5 in its code family, with their registry titles.

• G83.31 — Monoplegia, unspecified affecting right dominant side
• G83.32 — Monoplegia, unspecified affecting left dominant side
• G83.33 — Monoplegia, unspecified affecting right nondominant side
• G83.34 — Monoplegia, unspecified affecting left nondominant side
• G83.4 — Cauda equina syndrome
• G83.8 — Other specified paralytic syndromes
• G83.81 — Brown-Séquard syndrome
• G83.82 — Anterior cord syndrome
• G83.83 — Posterior cord syndrome
• G83.84 — Todd's paralysis (postepileptic)

View all codes in the G83 family