Health Information Management

ICD-10-CM coding conventions for etiology and manifestations

ICD-10 Trainer, May 18, 2012

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. ICD-10-CM coding conventions for such conditions require coders to report the underlying condition first followed by the manifestation.

Wherever such a combination exists, coders will notice a “use additional code” note for the etiology code, and a “code first” note for the manifestation code. These instructional notes indicate the proper sequencing order of the codes, which is etiology followed by manifestation.

Read more on the ICD-10 Trainer blog.

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