ICD-10 O10.319
Billable / SpecificPre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimester
About ICD-10-CM O10.319
ICD-10-CM code O10.319 represents Pre-existing hypertensive heart and chronic kidney disease complicating pregnancy, unspecified trimester. This is a billable/specific code in the Pregnancy, Childbirth, and Puerperium chapter (block O10). The 2026 edition of ICD-10-CM O10.319 became effective on October 1, 2025.
Coding Tips for O10.319
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
Most O codes require a 7th character indicating trimester (1 = first, 2 = second, 3 = third). Some require fetus identification character. Code O09 (supervision of high-risk pregnancy) is required as a secondary code when applicable.
Medicare LCD Coverage for O10.319
Local Coverage Determinations (LCDs) from CMS MACs that list O10.319 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing O10.319.
2 Cigna
CPT Codes Commonly Billed with O10.319
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert O10.319 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| O10.319 | 64220 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To O10.319
Other codes in section O10-O16 (Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium).
ICD-10 O10.319, Billing FAQ
Is ICD-10 code O10.319 billable? +
Yes, O10.319 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What ICD-9 codes does O10.319 map to? +
Per CMS GEMs, O10.319 maps to ICD-9 codes: 64220. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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