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J84.89 ICD-10-CM Code: Other specified interstitial pulmonary diseases

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

Coding at a Glance

Tabular directives
4 inclusion terms · 8 Excludes1 · 1 Excludes2 · 1 use-additional code · 3 code-first instructions · 1 code-also instruction
Risk adjustment
CMS-HCC V28: 1 category · CMS-HCC V22 category 112 · RxHCC V08 category 227

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 196 — INTERSTITIAL LUNG DISEASE WITH MCC (MDC 04)
  • MS-DRG 197 — INTERSTITIAL LUNG DISEASE WITH CC (MDC 04)
  • MS-DRG 198 — INTERSTITIAL LUNG DISEASE WITHOUT CC/MCC (MDC 04)

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.

Risk Adjustment (CMS-HCC)

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

  • HCC 280 — Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders

Other models: CMS-HCC V22 HCC 112 · RxHCC V08 HCC 227

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

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for J84.89 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 J84.89 itself; “inherited from” names the category or block whose note applies here.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Endogenous lipoid pneumonia
  • Interstitial pneumonitis
  • Non-specific interstitial pneumonitis NOS
  • Organizing pneumonia NOS

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Source: inherited from J84

Code First

Underlying conditions that must be sequenced before this code.

  • Code first, if applicable:
  • poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy
  • underlying cause of pneumonopathy, if known

Code Also

Additional codes that may be required to fully describe the encounter.

  • Code also, if applicable, associated condition

Source: inherited from J84

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code, for adverse effect, to identify drug (T36-T50 with fifth or sixth character 5), if drug-induced

Coder workflow for J84.89

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

Before you code J84.89

  1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on J84.89; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

    ReviewJ84.81, J84.82, J84.83

    See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with J84.89. 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 J84.89’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.

    ReviewJ84.116, J84.113, J69.1, J84.2, J98.2

  2. Is the underlying (etiologic) condition the Code First note names documented?
    Yes → Sequence the underlying condition first, then J84.89.
    No → Continue; do not add an underlying condition the record does not document.

Consider J84.89. Then work the Use Additional Code note and review the Code Also note, and 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 underlying (etiologic) condition
Named in the Code First note; sequenced before this code when documented (Guidelines I.A.13).
The conditions the Use Additional Code note names
Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.
Any detail beyond this code’s title
What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes1 — check before selecting J84.89(8 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with J84.89: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareJ84.116, J84.113, J69.1, J84.2, J98.2

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

  • Excludes2 — not part of J84.89(1 note)

    Coding workflow: The conditions named in this note are not included in J84.89. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

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

  • Code First — sequencing check(3 notes)

    Coding workflow: Check whether the underlying or etiologic condition the note names is documented. When it is, sequence it before J84.89. Do not add an underlying condition the record does not document.

    See the official tabular notes · Guidelines I.A.13

  • Use Additional Code — after identifying J84.89(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with J84.89 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    See the official tabular notes · Guidelines I.A.13

  • Code Also — related condition(1 note)

    Coding workflow: Review the related condition when both are documented and the instruction applies. A Code Also note does not fix sequencing; the order follows the circumstances of the encounter.

    See the official tabular notes · Guidelines I.A.17

Coding decision scenarios

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

Documentation: Both the condition J84.89 describes and a condition named in its Excludes1 note are documented for the same encounter.

Coding question: Can both codes be reported?

Path: Review the Excludes1 note and the excluded code, and look for a provider statement on whether the two conditions are related.

Reason: Excludes1 means the two are not coded together; the exception is when the record shows the conditions are unrelated to each other (Guidelines I.A.12.a).

ReviewJ84.116, J84.113, J69.1, J84.2, J98.2

Documentation: The underlying condition the Code First note names is documented alongside this condition.

Coding question: How are the two sequenced?

Path: Review the Code First note.

Reason: The underlying condition is sequenced first and the manifestation follows (Guidelines I.A.13).

Documentation: A condition the Use Additional Code note names is documented.

Coding question: Is a second code reported with J84.89?

Path: Review the Use Additional Code note and the code it names.

Reason: The additional code is reported when the record documents the condition; a conditional instruction applies only when its condition is met (Guidelines I.A.13).

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

Other specified interstitial pulmonary diseases is a billable ICD-10-CM diagnosis code (J84.89).

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 (12)

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.

Decision Points

The directives on this code's own record, as a pre-claim checklist.

  1. Sequencing: 3 Code First instructions — the underlying condition is sequenced before this code when present. See the Code First notes
  2. 1 Use Additional Code instruction — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
  3. 1 Code Also note — a second code may apply; the guidelines leave its sequencing to the circumstances of the encounter. See the Code Also notes
  4. 8 Excludes1 entries — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
  5. 1 Excludes2 entry — those conditions are not part of this code and may be reported additionally when documented. See the Excludes2 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

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 J84.89 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: J69.1 — Pneumonitis due to inhalation of oils and essences, J84.113 — Idiopathic non-specific interstitial pneumonitis, J84.116 — Cryptogenic organizing pneumonia.

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

Referenced by 2 Code Also instructions across 2 chapters: I27.23 — Pulmonary hypertension due to lung diseases and hypoxia (via J84.-), M34.81 — Systemic sclerosis with lung involvement.

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: not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity for that release.

Named in the grouper logic of 3 MS-DRGs: DRG 196 (MDC 04), DRG 197 (MDC 04), DRG 198 (MDC 04).

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

Clinical classification (AHRQ CCSR):RSP016 — Other specified and unspecified lower respiratory disease (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 (Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders) for risk-adjusted payment.

J84.111 — Idiopathic interstitial pneumonia, not otherwise specified, J84.113 — Idiopathic non-specific interstitial pneumonitis, J84.114 — Acute interstitial pneumonitis, J84.115 — Respiratory bronchiolitis interstitial lung disease, J84.116 — Cryptogenic organizing pneumonia, J84.117 — Desquamative interstitial pneumonia, J84.178 — Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere, J84.2 — Lymphoid interstitial pneumonia, J84.81 — Lymphangioleiomyomatosis, J84.82 — Adult pulmonary Langerhans cell histiocytosis, J84.9 — Interstitial pulmonary disease, unspecified, J98.2 — Interstitial emphysema, J98.3 — Compensatory emphysema, J99 — Respiratory disorders in diseases classified elsewhere, M32.13 — Lung involvement in systemic lupus erythematosus, M33.01 — Juvenile dermatomyositis with respiratory involvement, M33.11 — Other dermatomyositis with respiratory involvement, M33.21 — Polymyositis with respiratory involvement, M33.91 — Dermatopolymyositis, unspecified with respiratory involvement, M35.02 — Sjögren syndrome with lung involvement, +58 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.

Lung Transplant Status/Complications, Cystic Fibrosis, Idiopathic Pulmonary Fibrosis and Lung Involvement in Systemic Sclerosis, Severe Persistent Asthma

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Other specified and unspecified lower respiratory disease).

J84.170 — Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere, J84.178 — Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere, J84.2 — Lymphoid interstitial pneumonia, J84.81 — Lymphangioleiomyomatosis, J84.82 — Adult pulmonary Langerhans cell histiocytosis, J84.83 — Surfactant mutations of the lung, J84.841 — Neuroendocrine cell hyperplasia of infancy, J84.842 — Pulmonary interstitial glycogenosis, J84.843 — Alveolar capillary dysplasia with vein misalignment, J84.848 — Other interstitial lung diseases of childhood, J84.9 — Interstitial pulmonary disease, unspecified, J85.2 — Abscess of lung without pneumonia, J98.01 — Acute bronchospasm, J98.09 — Other diseases of bronchus, not elsewhere classified, J98.4 — Other disorders of lung, J98.6 — Disorders of diaphragm, J98.8 — Other specified respiratory disorders, J98.9 — Respiratory disorder, unspecified, J99 — Respiratory disorders in diseases classified elsewhere, M05.10 — Rheumatoid lung disease with rheumatoid arthritis of unspecified site, +59 more

Same Index main term, other category

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

J69.0 — Pneumonitis due to inhalation of food and vomit (aspiration), J69.1 — Pneumonitis due to inhalation of oils and essences (lipid, lipoid), J69.8 — Pneumonitis due to inhalation of other solids and liquids (due to, detergent), J70.0 — Acute pulmonary manifestations due to radiation (radiation), J70.2 — Acute drug-induced interstitial lung disorders (chemotherapy, acute), J70.3 — Chronic drug-induced interstitial lung disorders (chemotherapy, chronic), J70.4 — Drug-induced interstitial lung disorders, unspecified (chemotherapy), J82.81 — Chronic eosinophilic pneumonia (eosinophilic), J82.82 — Acute eosinophilic pneumonia (eosinophilic, acute), J82.89 — Other pulmonary eosinophilia, not elsewhere classified (allergic), J85.0 — Gangrene and necrosis of lung (necrotic), J85.1 — Abscess of lung with pneumonia (with, lung abscess), J95.4 — Chemical pneumonitis due to anesthesia (postoperative), J95.851 — Ventilator associated pneumonia (due to, ventilator), J95.89 — Other postprocedural complications and disorders of respiratory system, not elsewhere classified (resulting from a procedure), J98.4 — Other disorders of lung, O29.01 — Aspiration pneumonitis due to anesthesia during pregnancy (postanesthetic, in pregnancy), O74.0 — Aspiration pneumonitis due to anesthesia during labor and delivery (aspiration, obstetric), O89.01 — Aspiration pneumonitis due to anesthesia during the puerperium (postanesthetic, postpartum, puerperal), P23.0 — Congenital pneumonia due to viral agent (viral, virus, congenital), +100 more

Contextual Map

Every relationship of J84.89 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 J84.89 with these 22 related codes in Claim Check

Hierarchy

Excludes1

Code First (15)

  • T51 — Toxic effect of alcohol[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T52 — Toxic effect of organic solvents[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T53 — Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T54 — Toxic effect of corrosive substances[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T55 — Toxic effect of soaps and detergents[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T56 — Toxic effect of metals[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T57 — Toxic effect of other inorganic substances[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • T58 — Toxic effect of carbon monoxide[Code First]: “poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
  • and 7 more

Use Additional Code (15)

Referenced by Excludes1 notes

Referenced by Code Also instructions

Clinical classification (CCSR)

Risk adjustment (CMS-HCC)

  • HCC 280 — Chronic Obstructive Pulmonary Disease, Interstitial Lung Disorders, and Other Chronic Lung Disorders [CMS-HCC]— CMS-HCC V28 · 2026

MS-DRG Grouper

MDC crossing

  • MDC 04 — Diseases and Disorders of the Respiratory System[MDC crossing]: “Diseases and Disorders of the Respiratory 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. 3,998 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries (12)

  • BOOP (bronchiolitis obliterans organized pneumonia)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Bronchiolitis (acute) (infective) (subacute), obliterans, with organizing pneumonia (BOOP)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Disease, diseased, lung, interstitial, specified NEC[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), bronchiolitis obliterans organized (BOOP)[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), broncho-, bronchial (confluent) (croupous) (diffuse) (disseminated) (hemorrhagic) (involving lobes) (lobar) (terminal), lipid, lipoid, endogenous[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), cholesterol[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), interstitial, non-specific[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pneumonia (acute) (double) (migratory) (purulent) (septic) (unresolved), lipid, lipoid (exogenous), endogenous[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • and 4 more

Nearest codes (30)

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

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. "J84.89 — Other specified interstitial pulmonary diseases." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/j84.89-other-specified-interstitial-pulmonary-diseases

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Other specified interstitial pulmonary diseases

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 J84.89 in its code family, with their registry titles.

View all codes in the J84 family