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D71 ICD-10-CM Code: Functional disorders of polymorphonuclear neutrophils

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Coding at a Glance

Risk adjustment
CMS-HCC V28: 1 category · CMS-HCC V22 category 47

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

  • HCC 115 — Specified Immunodeficiencies and White Blood Cell Disorders

Other models: CMS-HCC V22 HCC 47

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Coder workflow for D71

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

Before you code D71

  1. D71 is not reportable as written. Select the more specific code beneath it that the documentation supports. Codes are reported to the highest level of specificity the classification provides (Guidelines I.B.2).

    ReviewD71.1, D71.8, D71.9

    See the relationships section · Guide: How to choose an ICD-10-CM code →

Choose the right path

  1. Does the documentation support one of the more specific codes beneath D71?
    Yes → Select that code and continue the checks below on its own page.
    No → D71 cannot be reported as written; query for the specificity its subcategory needs.

    ReviewD71.1, D71.8, D71.9

Consider D71. 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).

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.

Code Overview

Functional disorders of polymorphonuclear neutrophils is a non-billable ICD-10-CM category code (D71). A more specific billable subcode must be selected for claims submission.

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

Verify Before Coding

  • Not billable as written — a more specific code is required: D71.1, D71.8, D71.9.

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 D71 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 8 Excludes1 notes: D80 — Immunodeficiency with predominantly antibody defects, D80-D89 — Certain disorders involving the immune mechanism (D80-D89), D81 — Combined immunodeficiencies, D82 — Immunodeficiency associated with other major defects, D83 — Common variable immunodeficiency, D84 — Other immunodeficiencies, D86 — Sarcoidosis, D89 — Other disorders involving the immune mechanism, not elsewhere classified.

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

Referenced by 22 Excludes2 notes across 2 chapters: L20 — Atopic dermatitis, L20-L30 — Dermatitis and eczema (L20-L30), L21 — Seborrheic dermatitis, L22 — Diaper dermatitis, L23 — Allergic contact dermatitis, L24 — Irritant contact dermatitis, L25 — Unspecified contact dermatitis, L26 — Exfoliative dermatitis, L27 — Dermatitis due to substances taken internally, L28 — Lichen simplex chronicus and prurigo, L29 — Pruritus, L30 — Other and unspecified dermatitis, R70 — Elevated erythrocyte sedimentation rate and abnormality of plasma viscosity, R70-R79 — Abnormal findings on examination of blood, without diagnosis (R70-R79), R71 — Abnormality of red blood cells, R73 — Elevated blood glucose level, R74 — Abnormal serum enzyme levels, R75 — Inconclusive laboratory evidence of human immunodeficiency virus [HIV], R76 — Other abnormal immunological findings in serum, R77 — Other abnormalities of plasma proteins, +2 more.

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

Referenced by 21 Code First instructions: T36 — Poisoning by, adverse effect of and underdosing of systemic antibiotics, T36-T39 — Antibiotics & Anti-infectives (T36-T39), T36-T50 — Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50), T37 — Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics, T38 — Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified, T39 — Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumatics, T40 — Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens], T40-T41 — Analgesics & Antipyretics (T40-T41), T41 — Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases, T42 — Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs, T42-T43 — Anticonvulsants & Psychotropics (T42-T43), T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified, T44 — Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system, T44-T46 — Cardiovascular & Gastrointestinal (T44-T46), T45 — Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified, T46 — Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system, T47 — Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal system, T47-T50 — Hormones & Systemic Agents (T47-T50), T48 — Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system, T49 — Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs, +1 more.

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.

Clinical classification (AHRQ CCSR):BLD007 — Diseases of white blood cells (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 CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Specified Immunodeficiencies and White Blood Cell Disorders) for risk-adjusted payment.

D70.0 — Congenital agranulocytosis, D70.4 — Cyclic neutropenia, D71.1 — Leukocyte adhesion deficiency, D71.8 — Other functional disorders of polymorphonuclear neutrophils, D71.9 — Functional disorders of polymorphonuclear neutrophils, unspecified, D72.0 — Genetic anomalies of leukocytes, D76.1 — Hemophagocytic lymphohistiocytosis, D76.3 — Other histiocytosis syndromes, D80.0 — Hereditary hypogammaglobulinemia, D80.2 — Selective deficiency of immunoglobulin A [IgA], D80.3 — Selective deficiency of immunoglobulin G [IgG] subclasses, D80.4 — Selective deficiency of immunoglobulin M [IgM], D80.5 — Immunodeficiency with increased immunoglobulin M [IgM], D81.4 — Nezelof's syndrome, D82.0 — Wiskott-Aldrich syndrome, D82.1 — Di George's syndrome, D84.1 — Defects in the complement system, D89.84 — IgG4-related disease

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.

Common Variable and Combined Immunodeficiencies

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Diseases of white blood cells).

D70.0 — Congenital agranulocytosis, D70.1 — Agranulocytosis secondary to cancer chemotherapy, D70.2 — Other drug-induced agranulocytosis, D70.3 — Neutropenia due to infection, D70.4 — Cyclic neutropenia, D70.8 — Other neutropenia, D70.9 — Neutropenia, unspecified, D71.1 — Leukocyte adhesion deficiency, D71.8 — Other functional disorders of polymorphonuclear neutrophils, D71.9 — Functional disorders of polymorphonuclear neutrophils, unspecified, D72.0 — Genetic anomalies of leukocytes, D72.1 — Eosinophilia, D72.10 — Eosinophilia, unspecified, D72.110 — Idiopathic hypereosinophilic syndrome [IHES], D72.111 — Lymphocytic Variant Hypereosinophilic Syndrome [LHES], D72.118 — Other hypereosinophilic syndrome, D72.119 — Hypereosinophilic syndrome [HES], unspecified, D72.12 — Drug rash with eosinophilia and systemic symptoms syndrome, D72.18 — Eosinophilia in diseases classified elsewhere, D72.19 — Other eosinophilia, +17 more

Contextual Map

Every relationship of D71 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 D71 with these 24 related codes in Claim Check

Hierarchy

Referenced by Excludes1 notes

Referenced by Excludes2 notes (22)

  • L20 — Atopic dermatitis[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • L20-L30 — Dermatitis and eczema (L20-L30)[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • L21 — Seborrheic dermatitis[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • L22 — Diaper dermatitis[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • L23 — Allergic contact dermatitis[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • L24 — Irritant contact dermatitis[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • L25 — Unspecified contact dermatitis[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • L26 — Exfoliative dermatitis[Excludes2]: “chronic (childhood) granulomatous disease (D71-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • and 14 more

Referenced by Code First instructions (21)

Clinical classification (CCSR)

Risk adjustment (CMS-HCC)

  • HCC 115 — Specified Immunodeficiencies and White Blood Cell Disorders [CMS-HCC]— CMS-HCC V28 · 2026

Nearest codes

Change history (2)

Common coding questions

Can D71 be billed directly?

No. D71 (Functional disorders of polymorphonuclear neutrophils) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

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
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

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. "D71 — Functional disorders of polymorphonuclear neutrophils." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/d71-functional-disorders-of-polymorphonuclear-neutrophils

Change history

  • FY2026 — October 1, 2025
    Became a non-billable header
    FY2026 changes
  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Functional disorders of polymorphonuclear neutrophils

Nearest Codes in This Family

Official ICD-10-CM classifications closest to D71 in its code family, with their registry titles.