2026 ICD-10-CM Diagnosis Code T49.4X6AUnderdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations, initial encounter

AHRQ’s CCSR groups this code into broader clinical categories.

• Allantoin

  a urea hydantoin that is found in urine and plants and is used in dermatological preparations.

• Anthralin

  an anthracene derivative that disrupts function and structure of mitochondria and is used for the treatment of dermatoses, especially psoriasis. it may cause folliculitis.

• Capsaicin

  an alkylamide found in capsicum that acts at trpv cation channels.

• Capsicum

  a plant genus of the family solanaceae. the hot peppers yield capsaicin, which activates vanilloid receptors. several varieties have sweet or pungent edible fruits that are used as vegetables when fresh and spices when the pods are dried.

• Anacardic Acids

  a group of 6-alkyl salicylic acids that are found in anacardium and known for causing contact dermatitis.

• Salicylates

  the salts or esters of salicylic acids, or salicylate esters of an organic acid. some of these have analgesic, antipyretic, and anti-inflammatory activities by inhibiting prostaglandin synthesis.

• Salicylic Acid

  a compound obtained from the bark of the white willow and wintergreen leaves. it has bacteriostatic, fungicidal, and keratolytic actions.

Substances in the Table of Drugs and Chemicals that reference this code family. Always confirm in the Tabular List before coding.

Medication Errors

Medicines treat infectious diseases, prevent problems from chronic diseases, and ease pain. But medicines can also cause harmful reactions if not used correctly. Errors can happen in the hospital, at the health care provider's office, at the pharmacy, or at home. You can help prevent errors by:

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