Question 1

What is ICD-10 code O68?

Accepted Answer

O68 is the ICD-10-CM diagnosis code for labor and delivery complicated by abnormality of fetal acid-base balance. Labor and delivery complicated by an abnormal fetal acid-base balance, indicating fetal distress or hypoxia during the birthing process. O68 sits in the ICD-10-CM chapter for pregnancy, childbirth and the puerperium (o00-o9a), within the section covering complications of labor and delivery (o60-o77).

O68 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

Document the specific acid-base abnormality (acidosis, alkalosis) and the pH or base deficit values when available.

Question 2

Is O68 an HCC code?

Accepted Answer

No. O68 is a billable ICD-10-CM code but does not map to any payment HCC category under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can still be reported on Medicare Advantage encounter data submissions, but it does not contribute to the beneficiary's Risk Adjustment Factor (RAF) score and therefore does not affect the risk-adjusted capitation payment to the plan. V28 reached 100% phase-in for payment year 2026.

Question 3

Is O68 billable?

Accepted Answer

Yes. O68 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. O68 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Question 4

What is the V28 vs V24 difference for O68?

Accepted Answer

O68 does not map to a payment HCC under either the CMS-HCC V28 risk adjustment model or the older V24 model. V28 reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition. Because neither model rewards O68 with a risk adjustment factor, it contributes zero to a Medicare Advantage beneficiary's RAF score in either version. Coders should check whether provider documentation supports a more specific child code that does map to a payment HCC.

Question 5

What should coders know when reporting O68?

Accepted Answer

Document the specific acid-base abnormality (acidosis, alkalosis) and the pH or base deficit values when available Correlate with fetal heart rate abnormalities and other signs of fetal distress documented in labor records

O68

Is O68 an HCC code?

What This Code Means

Coding Tips

Excludes 1 — Do NOT code together

Excludes 2 — Not included here, may code separately

Code Hierarchy

Open O68 in the Interactive Encoder