O26.42 is the authoritative medical code for Herpes gestationis, second trimester. This classification is used in medical billing and clinical recording to specify the clinical criteria for herpes gestationis, second trimester (ICD-10-CM O26.42), ensuring healthcare documentation aligns with current federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Herpes gestationis, second trimester is a billable ICD-10-CM diagnosis code O26.42. Excludes2 (not included here): maternal care related to the fetus and amniotic cavity and possible delivery problems O30-O48; maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium O98-O99.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O26.42 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- maternal care related to the fetus and amniotic cavity and possible delivery problems O30-O48
- maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium O98-O99
Frequently Asked Questions (FAQ) & Clinical Guidance
Can O26.42 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, O26.42 and the following are not considered part of each other and may both be reported when both conditions are present: maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48); maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to O26.42 in its code family, with their registry titles.
- O26.32 — Retained intrauterine contraceptive device in pregnancy, second trimester
- O26.33 — Retained intrauterine contraceptive device in pregnancy, third trimester
- O26.4 — Herpes gestationis
- O26.40 — Herpes gestationis, unspecified trimester
- O26.41 — Herpes gestationis, first trimester
- O26.43 — Herpes gestationis, third trimester
- O26.5 — Maternal hypotension syndrome
- O26.50 — Maternal hypotension syndrome, unspecified trimester
- O26.51 — Maternal hypotension syndrome, first trimester
- O26.52 — Maternal hypotension syndrome, second trimester
View all 40 codes in the O26 family