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Showing posts from February, 2023

Sequela Coding in ICD-10-CM

According to the ICD-10-CM Manual guidelines, a sequela (7th character "S") code cannot be listed as the primary, first listed, or principal diagnosis on a claim, nor can it be the only diagnosis on a claim.  Coding of a sequela requires reporting of the condition or nature of the sequela sequenced first, followed by the sequela (7th character "S") code.  Examples of sequela (7th character "S") diagnosis codes included in this policy: M48.40XS (Fatigue fracture of vertebra, site unspecified, sequela of fracture) S00.279S (Other superficial bite of unspecified eyelid and periocular area, sequela) T36.1X6S (Underdosing of cephalosporins and other beta-lactam antibiotics, sequela)   The codes in Chapter 19 of the ICD10 book are for injury, poisoning, and other consequences of external causes (S00-T88). Many of them require a 7th character to identify the correct ICD10 code for the episode of care: initial, subsequent, or sequela.  Below are hel...