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N70.01 ICD-10-CM Code: Acute salpingitis

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

Coding at a Glance

Tabular directives
6 inclusion terms · 5 Excludes1 · 1 use-additional code · 1 code-also instruction

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 742 — UTERINE AND ADNEXA PROCEDURES FOR NON-MALIGNANCY WITH CC/MCC (MDC 13)
  • MS-DRG 743 — UTERINE AND ADNEXA PROCEDURES FOR NON-MALIGNANCY WITHOUT CC/MCC (MDC 13)
  • MS-DRG 757 — INFECTIONS, FEMALE REPRODUCTIVE SYSTEM WITH MCC (MDC 13)
  • MS-DRG 758 — INFECTIONS, FEMALE REPRODUCTIVE SYSTEM WITH CC (MDC 13)
  • MS-DRG 759 — INFECTIONS, FEMALE REPRODUCTIVE SYSTEM WITHOUT CC/MCC (MDC 13)

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.

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for N70.01 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 N70.01 itself; “inherited from” names the category or block whose note applies here.

This page already reflects the FY2027 tabular note taking effect October 1, 2026.

Includes

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

  • abscess (of) fallopian tube
  • abscess (of) ovary
  • pyosalpinx
  • salpingo-oophoritis
  • tubo-ovarian abscess
  • tubo-ovarian inflammatory disease

Source: inherited from N70

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).

Code Also

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

  • Code also, if applicable, pelvic abscess (K6A.0-)

Source: inherited from N70-N77

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code (B95-B97), to identify infectious agent

Source: inherited from N70

Coder workflow for N70.01

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

Before you code N70.01

  1. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with N70.01. 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 N70.01’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.

    ReviewA54.24, A18.17, O08.0, O23, O75.3, O85

Consider N70.01. 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).
Acuity
Acute or chronic as documented; when both are documented and separate codes exist, both are reported with the acute code first (Guidelines I.B.8).
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.

Official instructions as workflow

  • Excludes1 — check before selecting N70.01(5 notes)

    Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with N70.01: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

    CompareA54.24, A18.17, O08.0, O23, O75.3, O85

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

  • Use Additional Code — after identifying N70.01(1 note)

    Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with N70.01 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.

    ReviewK6A.0

    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 N70.01 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).

ReviewA54.24, A18.17, O08.0, O23, O75.3, O85

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

Coding question: Is a second code reported with N70.01?

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

Acute salpingitis is a billable ICD-10-CM diagnosis code (N70.01).

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 (1)

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. 1 Use Additional Code instruction — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
  2. 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
  3. 5 Excludes1 entries — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 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

  • 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

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 67 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 5 MS-DRGs: DRG 742 (MDC 13), DRG 743 (MDC 13), DRG 757 (MDC 13), DRG 758 (MDC 13), DRG 759 (MDC 13).

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

Clinical classification (AHRQ CCSR):GEN018 — Inflammatory diseases of female pelvic organs (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 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.

A54.82 — Gonococcal brain abscess, A54.84 — Gonococcal pneumonia, A54.89 — Other gonococcal infections, A54.9 — Gonococcal infection, unspecified, A59.00 — Urogenital trichomoniasis, unspecified, A59.8 — Trichomoniasis of other sites, A59.9 — Trichomoniasis, unspecified, B37.41 — Candidal cystitis and urethritis, B37.42 — Candidal balanitis, B37.49 — Other urogenital candidiasis, N70.02 — Acute oophoritis, N70.03 — Acute salpingitis and oophoritis, N70.11 — Chronic salpingitis, N70.12 — Chronic oophoritis, N70.13 — Chronic salpingitis and oophoritis, N70.91 — Salpingitis, unspecified, N70.92 — Oophoritis, unspecified, N70.93 — Salpingitis and oophoritis, unspecified, N71.0 — Acute inflammatory disease of uterus, N71.1 — Chronic inflammatory disease of uterus, +46 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Inflammatory diseases of female pelvic organs).

A54.03 — Gonococcal cervicitis, unspecified, A54.24 — Gonococcal female pelvic inflammatory disease, A56.02 — Chlamydial vulvovaginitis, A56.11 — Chlamydial female pelvic inflammatory disease, A59.01 — Trichomonal vulvovaginitis, A60.03 — Herpesviral cervicitis, A60.04 — Herpesviral vulvovaginitis, B37.3 — Candidiasis of vulva and vagina, B37.31 — Acute candidiasis of vulva and vagina, B37.32 — Chronic candidiasis of vulva and vagina, N70.02 — Acute oophoritis, N70.03 — Acute salpingitis and oophoritis, N70.11 — Chronic salpingitis, N70.12 — Chronic oophoritis, N70.13 — Chronic salpingitis and oophoritis, N70.91 — Salpingitis, unspecified, N70.92 — Oophoritis, unspecified, N70.93 — Salpingitis and oophoritis, unspecified, N71.0 — Acute inflammatory disease of uterus, N71.1 — Chronic inflammatory disease of uterus, +43 more

Same Index main term, other category

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

A18.17 — Tuberculous female pelvic inflammatory disease (tuberculous), A54.24 — Gonococcal female pelvic inflammatory disease (specific), A56.11 — Chlamydial female pelvic inflammatory disease (chlamydial), H68.00 — Unspecified Eustachian salpingitis (eustachian), H68.01 — Acute Eustachian salpingitis (eustachian, acute), H68.02 — Chronic Eustachian salpingitis (eustachian, chronic)

Contextual Map

Every relationship of N70.01 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.

Hierarchy

Clinical classification (CCSR)

MS-DRG Grouper

MDC crossing

  • MDC 13 — Diseases and Disorders of the Female Reproductive System[MDC crossing]: “Diseases and Disorders of the Female Reproductive 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. 2,232 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

  • Salpingitis (catarrhal) (fallopian tube) (nodular) (pseudofollicular) (purulent) (septic), acute[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (12)

Change history (2)

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. "N70.01 — Acute salpingitis." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/n70.01-acute-salpingitis

Change history

  • Upcoming · effective FY2027 — October 1, 2026
    Code Also note will be added
    , if applicable, pelvic abscess (K6A.0-)
    FY2027 changes
  • FY2016 — October 1, 2015
    In the code set at ICD-10-CM adoption
    Acute salpingitis

Nearest Codes in This Family

Official ICD-10-CM classifications closest to N70.01 in its code family, with their registry titles.

View all codes in the N70 family