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O00.122 ICD-10-CM Code: Left interstitial ectopic pregnancy without intrauterine pregnancy

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

Code Set: New for FY2027 — not valid before October 1, 2026.

Official Registry Overview & Definition

No additional overview provided for this record.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for O00.122 in the official ICD-10-CM tabular list.

Includes

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

  • ruptured ectopic pregnancy

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).

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • Use additional code from category O08 to identify any associated complication

Frequently Compared Codes

The official Excludes notes on O00.122 name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

  • FY2027 — 2026-10-01
    Added to the code set
    Left interstitial ectopic pregnancy without intrauterine pregnancy
    FY2027 changes

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.

Relationships & Classification

Other codes that name O00.122 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.

23 Excludes1 notes across 7 chapters: G08 (via O00.-), K65 (via O00.-), N70 (via O00.-), N70-N77 (via O00.-), N71 (via O00.-), N72 (via O00.-), N73 (via O00.-), N74 (via O00.-), N75 (via O00.-), N76 (via O00.-) and 13 more.

28 Excludes2 notes across 5 chapters: D65 (via O00.-), D68 (via O00.-), I26 (via O00.-), K72 (via O00.-), N17 (via O00.-), N17-N19 (via O00.-), N18 (via O00.-), N19 (via O00.-), N30 (via O00.-), N30-N39 (via O00.-) and 18 more.

6 Code First instructions: I47 (via O00.-), I49 (via O00.-), I50 (via O00.-), I74 (via O00.-), I80 (via O00.-), I82 (via O00.-).

Related Codes

Same condition, opposite side

Same category and title, differing only in which side of the body is affected.

O00.129 — Unspecified interstitial ectopic pregnancy without intrauterine pregnancy (unspecified), O00.121 — Right interstitial ectopic pregnancy without intrauterine pregnancy (right)

Contextual Map

Every relationship of O00.122 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

  • O00-O9A — Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A) (O00-O9A) [Hierarchy]
  • O00-O08 — Pregnancy with abortive outcome [Hierarchy]

Referenced by Excludes1 notes (23)

  • G08 — Intracranial and intraspinal phlebitis and thrombophlebitis [Excludes1](via O00.-): “abortion, ectopic or molar pregnancy (O00-O07, O08.7)” · check together
  • K65 — Peritonitis [Excludes1](via O00.-): “peritonitis with or following abortion or ectopic or molar pregnancy (O00-O07, O08.0)” · check together
  • N70 — Salpingitis and oophoritis [Excludes1](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.0)” · check together
  • N70-N77 — Inflammatory diseases of female pelvic organs (N70-N77) [Excludes1](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.0)” · check together
  • N71 — Inflammatory disease of uterus, except cervix [Excludes1](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.0)” · check together
  • N72 — Inflammatory disease of cervix uteri [Excludes1](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.0)” · check together
  • N73 — Other female pelvic inflammatory diseases [Excludes1](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.0)” · check together
  • N74 — Female pelvic inflammatory disorders in diseases classified elsewhere [Excludes1](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.0)” · check together
  • and 15 more

Referenced by Excludes2 notes (28)

  • D65 — Disseminated intravascular coagulation [defibrination syndrome] [Excludes2](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.1)” · check together
  • D68 — Other coagulation defects [Excludes2](via O00.-): “coagulation defects complicating abortion or ectopic or molar pregnancy (O00-O07, O08.1)” · check together
  • I26 — Pulmonary embolism [Excludes2](via O00.-): “pulmonary embolism complicating abortion, ectopic or molar pregnancy (O00-O07, O08.2)” · check together
  • K72 — Hepatic failure, not elsewhere classified [Excludes2](via O00.-): “hepatic failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)” · check together
  • N17 — Acute kidney failure [Excludes2](via O00.-): “renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)” · check together
  • N17-N19 — Acute kidney failure and chronic kidney disease (N17-N19) [Excludes2](via O00.-): “renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)” · check together
  • N18 — Chronic kidney disease (CKD) [Excludes2](via O00.-): “renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)” · check together
  • N19 — Unspecified kidney failure [Excludes2](via O00.-): “renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)” · check together
  • and 20 more

Referenced by Code First instructions

  • I47 — Paroxysmal tachycardia [Code First](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.8)” · check together
  • I49 — Other cardiac arrhythmias [Code First](via O00.-): “abortion or ectopic or molar pregnancy (O00-O07, O08.8)” · check together
  • I50 — Heart failure [Code First](via O00.-): “heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)” · check together
  • I74 — Arterial embolism and thrombosis [Code First](via O00.-): “embolism and thrombosis complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2)” · check together
  • I80 — Phlebitis and thrombophlebitis [Code First](via O00.-): “, if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7)” · check together
  • I82 — Other venous embolism and thrombosis [Code First](via O00.-): “abortion, ectopic or molar pregnancy (O00-O07, O08.7)” · check together

Nearest codes (40)

  • O00 — Ectopic pregnancy [Sibling]
  • O00.0 — Abdominal pregnancy [Sibling]
  • O00.00 — Abdominal pregnancy without intrauterine pregnancy [Sibling]
  • O00.01 — Abdominal pregnancy with intrauterine pregnancy [Sibling]
  • O00.1 — Tubal pregnancy [Sibling]
  • O00.10 — Tubal pregnancy without intrauterine pregnancy [Sibling]
  • O00.101 — Right tubal pregnancy without intrauterine pregnancy [Sibling]
  • O00.102 — Left tubal pregnancy without intrauterine pregnancy [Sibling]
  • and 32 more

Change history

  • FY2027 — Added to the code set [Change history]

Nearest Codes in This Family

Official ICD-10-CM classifications closest to O00.122 in its code family, with their registry titles.

  • O00.111 — Right tubal pregnancy with intrauterine pregnancy
  • O00.112 — Left tubal pregnancy with intrauterine pregnancy
  • O00.119 — Unspecified tubal pregnancy with intrauterine pregnancy
  • O00.12 — Interstitial ectopic pregnancy without intrauterine pregnancy
  • O00.121 — Right interstitial ectopic pregnancy without intrauterine pregnancy
  • O00.129 — Unspecified interstitial ectopic pregnancy without intrauterine pregnancy
  • O00.13 — Interstitial ectopic pregnancy with intrauterine pregnancy
  • O00.131 — Right interstitial ectopic pregnancy with intrauterine pregnancy
  • O00.132 — Left interstitial ectopic pregnancy with intrauterine pregnancy
  • O00.139 — Unspecified interstitial ectopic pregnancy with intrauterine pregnancy

View all codes in the O00 family