N98.1 — Hyperstimulation of ovaries
N98.1 is a billable, specific ICD-10-CM code for hyperstimulation of ovaries. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Hyperstimulation of ovaries NOS
- Hyperstimulation of ovaries associated with induced ovulation
Risk adjustment
N98.1 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
N98.1 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.
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
How N98.1 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 N98.1.
- Hyperstimulation, ovaries(associated with induced ovulation)
- Complication›artificial›fertilization or insemination›hyperstimulation of ovaries
Related codes at this level
Codes that share N98. If N98.1 is not quite right, the correct code is usually one of these.
- N98.0Infection associated with artificial insemination
- N98.2Complications of attempted introduction of fertilized ovum following in vitro fertilization
- N98.3Complications of attempted introduction of embryo in embryo transfer
- N98.8Other complications associated with artificial fertilization
- N98.9Complication associated with artificial fertilization, unspecified
Questions about N98.1
- Is N98.1 a billable ICD-10-CM code?
- Yes. N98.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does N98.1 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Noninflammatory disorders of female genital tract (N80-N98).