Skip to main content

A36.83 ICD-10-CM Code: Diphtheritic polyneuritis

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

Potential MS-DRG participation — not a DRG assignment.

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43, Appendix B.

  • MS-DRG 867 — OTHER INFECTIOUS AND PARASITIC DISEASES DIAGNOSES WITH MCC (MDC 18)
  • MS-DRG 868 — OTHER INFECTIOUS AND PARASITIC DISEASES DIAGNOSES WITH CC (MDC 18)
  • MS-DRG 869 — OTHER INFECTIOUS AND PARASITIC DISEASES DIAGNOSES WITHOUT CC/MCC (MDC 18)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Overview

Diphtheritic polyneuritis is a billable ICD-10-CM diagnosis code (A36.83).

MedCoder summary Summary composed by MedCoder from this code's official ICD-10-CM record. The tabular instructional notes themselves appear verbatim below.

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.

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 A36.83 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 1 Excludes1 note: G63 — Polyneuropathy in diseases classified elsewhere.

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

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 12 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 3 MS-DRGs: DRG 867 (MDC 18), DRG 868 (MDC 18), DRG 869 (MDC 18).

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

Clinical classification (AHRQ CCSR):NVS015 — Polyneuropathies (default); INF003 — Bacterial infections.

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.

A36.0 — Pharyngeal diphtheria, A36.1 — Nasopharyngeal diphtheria, A36.2 — Laryngeal diphtheria, A36.3 — Cutaneous diphtheria, A36.81 — Diphtheritic cardiomyopathy, A36.82 — Diphtheritic radiculomyelitis, A36.84 — Diphtheritic tubulo-interstitial nephropathy, A36.85 — Diphtheritic cystitis, A36.86 — Diphtheritic conjunctivitis, A36.89 — Other diphtheritic complications, A36.9 — Diphtheria, unspecified

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical categories (Polyneuropathies, Bacterial infections).

A50.43 — Late congenital syphilitic polyneuropathy, A52.15 — Late syphilitic neuropathy, B02.23 — Postherpetic polyneuropathy, B26.84 — Mumps polyneuropathy, B27.01 — Gammaherpesviral mononucleosis with polyneuropathy, B27.11 — Cytomegaloviral mononucleosis with polyneuropathy, B27.81 — Other infectious mononucleosis with polyneuropathy, B27.91 — Infectious mononucleosis, unspecified with polyneuropathy, E08.42 — Diabetes mellitus due to underlying condition with diabetic polyneuropathy, E08.43 — Diabetes mellitus due to underlying condition with diabetic autonomic (poly)neuropathy, E09.42 — Drug or chemical induced diabetes mellitus with neurological complications with diabetic polyneuropathy, E09.43 — Drug or chemical induced diabetes mellitus with neurological complications with diabetic autonomic (poly)neuropathy, E10.42 — Type 1 diabetes mellitus with diabetic polyneuropathy, E10.43 — Type 1 diabetes mellitus with diabetic autonomic (poly)neuropathy, E11.42 — Type 2 diabetes mellitus with diabetic polyneuropathy, E11.43 — Type 2 diabetes mellitus with diabetic autonomic (poly)neuropathy, E13.42 — Other specified diabetes mellitus with diabetic polyneuropathy, E13.43 — Other specified diabetes mellitus with diabetic autonomic (poly)neuropathy, G60.0 — Hereditary motor and sensory neuropathy, G60.1 — Refsum's disease, +441 more

Same Index main term, other category

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

A17.89 — Other tuberculosis of nervous system (in, tuberculosis), A30.9 — Leprosy, unspecified (in, leprosy), A50.43 — Late congenital syphilitic polyneuropathy (syphilitic, congenital), A52.15 — Late syphilitic neuropathy (syphilitic), A69.22 — Other neurologic disorders in Lyme disease (in, Lyme disease), B02.23 — Postherpetic polyneuropathy (in, zoster), B26.84 — Mumps polyneuropathy (in, mumps), B27.91 — Infectious mononucleosis, unspecified with polyneuropathy (in, infectious, mononucleosis), B89 — Unspecified parasitic disease (in, parasitic disease NEC), B99 — Other and unspecified infectious diseases (in, infectious, disease NEC), D49.9 — Neoplasm of unspecified behavior of unspecified site (in, neoplastic disease), D51.0 — Vitamin B12 deficiency anemia due to intrinsic factor deficiency (in, vitamin B12 deficiency, with anemia), D51.3 — Other dietary vitamin B12 deficiency anemia (in, vitamin B12 deficiency, with anemia, due to dietary deficiency), D86.89 — Sarcoidosis of other sites (in, sarcoidosis), E16.2 — Hypoglycemia, unspecified (in, hypoglycemia), E34.9 — Endocrine disorder, unspecified (in, endocrine disease NEC), E51.11 — Dry beriberi (in, beriberi), E52 — Niacin deficiency [pellagra] (in, pellagra), E53.1 — Pyridoxine deficiency (in, deficiency, vitamin B6), E53.8 — Deficiency of other specified B group vitamins (in, vitamin B12 deficiency), +30 more

Contextual Map

Every relationship of A36.83 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 A36.83 with this related code in Claim Check

Hierarchy

Referenced by Excludes1 notes

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 18 — Infectious and Parasitic Diseases, Systemic or Unspecified Sites[MDC crossing]: “Infectious and Parasitic Diseases, Systemic or Unspecified Sites — 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. 1 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

  • Polyneuritis, polyneuritic, diphtheritic[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Polyneuropathy (peripheral), in (due to), diphtheria[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (13)

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
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

Cite this page

Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.

MedCoder.ai. "A36.83 — Diphtheritic polyneuritis." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/a36.83-diphtheritic-polyneuritis

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Diphtheritic polyneuritis

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027 (effective October 1, 2026), and none are recorded for this code. Note changes are tracked from FY2027 only.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to A36.83 in its code family, with their registry titles.

View all codes in the A36 family