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ALL MEDICAL CODES IN CATEGORY O70: Perineal laceration during deliveryO70.2: Third degree perineal laceration during deliveryO70.21: Third degree perineal laceration during delivery, IIIa

2025 ICD-10-CM code O70.21

Third-degree perineal laceration during delivery, IIIa.This indicates a tear involving less than 50% of the external anal sphincter (EAS) thickness.