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J15 ICD-10-CM Code: Bacterial pneumonia, not elsewhere classified

Compare with another code for J15Check this code on a claim

Billing Status: NO. This is a non-billable ICD-10-CM code: report a more specific billable code beneath it.

Coding at a Glance

Tabular directives
1 inclusion term · 4 Excludes1 · 9 Excludes2 · 1 use-additional code · 1 code-first instruction · 3 code-also instructions

Category · FY2027A non-billable heading in the tabular list: report a more specific code beneath it.

What you need to know

Source: CMS/NCHS Official ICD-10-CM tabular notes, quoted. From the CMS/NCHS tabular list for the release in force. A note the category or block publishes applies to this code too; the Instructions section marks which is which.

Code firstSequence the underlying condition before this code
Use additional codeReport with this code when documented
  • Use additional code, if applicable, to identify resistance to antimicrobial drugs (Z16.-)
Excludes1Never report with this code
  • chlamydial pneumonia (J16.0)
  • congenital pneumonia (P23.-)
  • Legionnaires' disease (A48.1)
  • spirochetal pneumonia (A69.8)
Code alsoMay be needed with this code
  • Code also, if applicable, any associated condition such as:
  • abscess (J85.1)
  • aspiration pneumonia (J69.-)
Excludes2Not included here; may be reported together
  • allergic or eosinophilic pneumonia (J82)
  • aspiration pneumonia NOS (J69.0)
  • meconium pneumonia (P24.01)
  • neonatal aspiration pneumonia (P24.-)

+5 more in Instructions

IncludesWhat this code covers
  • bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae

Where it sits Source: CMS/NCHS

Under:Chapter 10: Diseases of the Respiratory SystemJ09-J18 Influenza and pneumonia

Codes under J15 (10)

  • J15.0Pneumonia due to Klebsiella pneumoniaeBillable
  • J15.1Pneumonia due to PseudomonasBillable
  • J15.2Pneumonia due to staphylococcusNot billable
  • J15.3Pneumonia due to streptococcus, group BBillable
  • J15.4Pneumonia due to other streptococciBillable
  • J15.5Pneumonia due to Escherichia coliBillable
  • J15.6Pneumonia due to other Gram-negative bacteriaNot billable
  • J15.7Pneumonia due to Mycoplasma pneumoniaeBillable
  • J15.8Pneumonia due to other specified bacteriaBillable
  • J15.9Unspecified bacterial pneumoniaBillable

Most relevant related codes MedCoder-derived

Read off the official notes above and this code’s own position in the tabular list. Which to report is a documentation question; Compare shows the two side by side.

CompareCheck ClaimView Related Codes

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for J15 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2027Effective: October 1, 2026

Trace:FY2027 changesChange historyRelease, file and checksum

Notes without a marker are published on J15 itself; “inherited from” names the category or block whose note applies here.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • bronchopneumonia due to bacteria other than S. pneumoniae and H. influenzae

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 J09-J18

Code First

Underlying conditions that must be sequenced before this code.

Code Also

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

  • Code also, if applicable, any associated condition such as:
  • abscess (J85.1)
  • aspiration pneumonia (J69.-)

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code, if applicable, to identify resistance to antimicrobial drugs (Z16.-)

Source: inherited from J09-J18

Coder workflow for J15

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

Before you code J15

  1. J15 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).

    ReviewJ15.0, J15.1, J15.2, J15.3, J15.4, J15.5, J15.6, J15.7, J15.8, J15.9

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

  2. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with the code beneath J15. 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 one of the more specific codes beneath J15?
    Yes → Select that code and continue the checks below on its own page.
    No → J15 cannot be reported as written. Where the codes beneath it include an unspecified code, that code applies when the record goes no further; otherwise query for the missing detail.

    ReviewJ15.0, J15.1, J15.2, J15.3, J15.4, J15.5, J15.6, J15.7, J15.8, J15.9

  2. Does the documentation support a condition named in J15’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.

    ReviewJ16.0, P23, A48.1, A69.8

  3. Is the underlying (etiologic) condition the Code First note names documented?
    Yes → Sequence the underlying condition first, then the code beneath J15.
    No → Continue; do not add an underlying condition the record does not document.

    ReviewJ09.X1, J10.0, J11.0

Report the code beneath J15 that the documentation supports, not J15 itself. Then work the Use Additional Code note and review the Code Also note, and confirm that code is valid for the date of service on its own page.

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 code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

  • Excludes1 — check before selecting J15(4 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with J15: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareJ16.0, P23, A48.1, A69.8

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

  • Excludes2 — not part of J15(9 notes)

    Coding workflow: The conditions named in this note are not included in J15. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

    CompareJ82, J69.0, P24.01, P24, J69, P23.9

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

  • Code First — sequencing check(1 note)

    Coding workflow: Check whether the underlying or etiologic condition the note names is documented. When it is, sequence it before J15. Do not add an underlying condition the record does not document.

    ReviewJ09.X1, J10.0, J11.0

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

  • Use Additional Code — after identifying J15(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with J15 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

    ReviewZ16

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

  • Code Also — related condition(3 notes)

    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.

    ReviewJ85.1, J69

    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 J15 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).

ReviewJ16.0, P23, A48.1, A69.8

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).

ReviewJ09.X1, J10.0, J11.0

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

Coding question: Is a second code reported with the code beneath J15?

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).

ReviewZ16

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.

Don’t confuse J15 with…

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

The codes most likely to be picked instead of J15 — 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.

  • J16.0— 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 chlamydial pneumonia moves the case to J16.0; the two are not reported together unless documented as unrelated.

    Full comparison: J15 vs J16.0 →

  • P23— 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 congenital pneumonia moves the case to P23; the two are not reported together unless documented as unrelated.

    Full comparison: J15 vs P23 →

  • A48.1— 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 Legionnaires' disease moves the case to A48.1; the two are not reported together unless documented as unrelated.

    Full comparison: J15 vs A48.1 →

  • A69.8— 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 spirochetal pneumonia moves the case to A69.8; the two are not reported together unless documented as unrelated.

    Full comparison: J15 vs A69.8 →

  • J82— 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 allergic or eosinophilic pneumonia adds J82; it is not part of this code and both may be reported when both are documented.

    Full comparison: J15 vs J82 →

  • J69.0— 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 aspiration pneumonia NOS adds J69.0; it is not part of this code and both may be reported when both are documented.

    Full comparison: J15 vs J69.0 →

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.

Coding context

Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.

Code Overview

Bacterial pneumonia, not elsewhere classified is a non-billable ICD-10-CM category code (J15). 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.

Decision Points

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

  1. Sequencing: 1 Code First instruction — 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. 3 Code Also notes — a second code may apply; the guidelines leave its sequencing to the circumstances of the encounter. See the Code Also notes
  4. 4 Excludes1 entries — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
  5. 9 Excludes2 entries — 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

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-derived relationships — computed from published CMS and AHRQ datasets

Other codes that name J15 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 Use Additional Code instruction: J95.89 — Other postprocedural complications and disorders of respiratory system, not elsewhere classified.

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

Referenced by 2 Code Also instructions across 2 chapters: D81.82 — Activated Phosphoinositide 3-kinase Delta Syndrome [APDS], J69 — Pneumonitis due to solids and liquids.

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

Contextual Map

Every relationship of J15 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 J15 with these 19 related codes in Claim Check

Hierarchy

Excludes1

Excludes2 (9)

Code First

Use Additional Code

  • Z16 — Resistance to antimicrobial drugs[Use Additional Code]: “code, if applicable, to identify resistance to antimicrobial drugs (Z16.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2027

Code Also

Referenced by Use Additional Code instructions

Referenced by Code Also instructions

Nearest codes (17)

Change history

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

Relevant guides

Reference

Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.

Common coding questions

MedCoder editorial

Can J15 be billed directly?

No. J15 (Bacterial pneumonia, not elsewhere classified) 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 FY2027 tabular list, index and tables, effective October 1, 2026 Release, file and checksum · Publisher’s page
Claim edits Official source data
CMS Definitions of Medicare Code Edits — v44.0 (October 2026) 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-derived 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 editorial 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.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules

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. "J15 — Bacterial pneumonia, not elsewhere classified." ICD-10-CM FY2027. https://medcoder.ai/icd10/code/j15-bacterial-pneumonia-not-elsewhere-classified

Change history

  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Bacterial pneumonia, not elsewhere classified

No changes since FY2016 — additions, deletions, description changes and billable-status changes are tracked through FY2027, 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 J15 in its code family, with their registry titles.