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N94.0 ICD-10-CM Code: Mittelschmerz

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 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 760 — MENSTRUAL AND OTHER FEMALE REPRODUCTIVE SYSTEM DISORDERS WITH CC/MCC (MDC 13)
  • MS-DRG 761 — MENSTRUAL AND OTHER FEMALE REPRODUCTIVE SYSTEM DISORDERS 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.

Code Overview

Mittelschmerz is a billable ICD-10-CM diagnosis code (N94.0).

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 (4)

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

  • 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 N94.0 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 11 Excludes2 notes: R10 — Abdominal and pelvic pain (via N94.-), R10-R19 — Symptoms and signs involving the digestive system and abdomen (R10-R19) (via N94.-), R11 — Nausea and vomiting (via N94.-), R12 — Heartburn (via N94.-), R13 — Aphagia and dysphagia (via N94.-), R14 — Flatulence and related conditions (via N94.-), R15 — Fecal incontinence (via N94.-), R16 — Hepatomegaly and splenomegaly, not elsewhere classified (via N94.-), R17 — Unspecified jaundice (via N94.-), R18 — Ascites (via N94.-), R19 — Other symptoms and signs involving the digestive system and abdomen (via N94.-).

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

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 4 MS-DRGs: DRG 742 (MDC 13), DRG 743 (MDC 13), DRG 760 (MDC 13), DRG 761 (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):GEN025 — Other specified female genital disorders (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 category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Other specified female genital disorders).

N90.811 — Female genital mutilation Type I status, N90.812 — Female genital mutilation Type II status, N90.813 — Female genital mutilation Type III status, N90.818 — Other female genital mutilation status, N90.89 — Other specified noninflammatory disorders of vulva and perineum, N90.9 — Noninflammatory disorder of vulva and perineum, unspecified, N93.0 — Postcoital and contact bleeding, N93.1 — Pre-pubertal vaginal bleeding, N93.8 — Other specified abnormal uterine and vaginal bleeding, N93.9 — Abnormal uterine and vaginal bleeding, unspecified, N94.1 — Dyspareunia, N94.10 — Unspecified dyspareunia, N94.11 — Superficial (introital) dyspareunia, N94.12 — Deep dyspareunia, N94.19 — Other specified dyspareunia, N94.2 — Vaginismus, N94.3 — Premenstrual tension syndrome, N94.810 — Vulvar vestibulitis, N94.818 — Other vulvodynia, N94.819 — Vulvodynia, unspecified, +94 more

Same Index main term, other category

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

M79.64 — Pain in hand and fingers (limb, upper, hand), M79.65 — Pain in thigh (limb, lower, thigh), M79.66 — Pain in lower leg (limb, lower, lower leg), M79.67 — Pain in foot and toes (limb, lower, toe), N23 — Unspecified renal colic (kidney), N48.89 — Other specified disorders of penis (penis), N50.81 — Testicular pain (testis), N50.82 — Scrotal pain (scrotum), N50.89 — Other specified disorders of the male genital organs (spermatic cord), N64.4 — Mastodynia (breast), N97.0 — Female infertility associated with anovulation (failure or lack of), R07.0 — Pain in throat (throat), R07.1 — Chest pain on breathing (diaphragm), R07.2 — Precordial pain (precordial), R07.81 — Pleurodynia (chest, pleurodynia), R07.82 — Intercostal pain (intercostal), R07.89 — Other chest pain (rib), R07.9 — Chest pain, unspecified (chest), R10.0 — Acute abdomen (abdominal, severe with abdominal rigidity), R10.10 — Upper abdominal pain, unspecified (abdominal, upper), +78 more

Contextual Map

Every relationship of N94.0 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 N94.0 with these 8 related codes in Claim Check

Hierarchy

Referenced by Excludes2 notes (11)

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

  • Mittelschmerz[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Ovulation (cycle), pain[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pain (s), intermenstrual[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
  • Pain (s), ovulation[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (18)

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. "N94.0 — Mittelschmerz." ICD-10-CM FY2026. https://medcoder.ai/icd10/code/n94.0-mittelschmerz

Change history

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

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 N94.0 in its code family, with their registry titles.

View all codes in the N94 family