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O08.5

O08.5Metabolic disorders following an ectopic and molar pregnancy

Billable / specific codeICD-10-CM

O08.5 is a billable, specific ICD-10-CM code for metabolic disorders following an ectopic and molar pregnancy. It is valid for submission on a claim.

Other codes that can never be billed with O08.5

These codes carry an Excludes1 note pointing at O08.5. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O08.5 alone.

  • E87Other disorders of fluid, electrolyte and acid-base balance

Risk adjustment

O08.5 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

O08.5 is named in 1 Medicare coverage policy 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A57189Billing and Coding: Serum Magnesium

How O08.5 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to O08.5.

  • Complicationectopic pregnancymetabolic disorder
  • Complicationmolar pregnancy NOSmetabolic disorder
  • Electrolyte imbalancewithectopic pregnancy
  • Electrolyte imbalancewithmolar pregnancy
  • Imbalanceelectrolytefollowing ectopic or molar pregnancy
  • Disorderelectrolyte NECwithectopic pregnancy
  • Disorderelectrolyte NECwithmolar pregnancy
  • Disturbancemetabolismwithectopic pregnancy
  • Disturbancemetabolismwithmolar pregnancy
  • Imbalanceelectrolytewithmolar pregnancy
  • Pregnancyectopiccomplicatedelectrolyte imbalance
  • Pregnancyectopiccomplicatedmetabolic disorder

Related codes at this level

Codes that share O08. If O08.5 is not quite right, the correct code is usually one of these.

Questions about O08.5

Is O08.5 a billable ICD-10-CM code?
Yes. O08.5 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does O08.5 sit in the tabular list?
Pregnancy, childbirth and the puerperium (O00-O9A), in the block Pregnancy with abortive outcome (O00-O08).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.