It received a starred review from Kirkus Reviews, Booklist, and Publishers Weekly. Her next novel, Sick Kids in Love, about two chronically ill teens who fall in love after meeting at the hospital, was published by Entangled Teen in November 2019. Salt received a starred review from Kirkus Reviews. Her tenth novel, Salt, about a family of teenage sea monster hunters, was published by Chronicle in 2018. Moskowitz self-published her next two novels, 3 and Wild, via Amazon. The story is a modern example of the epistolary novel, as the narrative unfolds through a series of fanfics, art pieces, text messages, and emails between and about the characters. Moskowitz also co-wrote a novel with Kat Helgeson, Gena/Finn, about two teen girls who bond over their intense appreciation for a cop TV show and ultimately fall in love over the course of a series of online interactions. It received a starred review from Bulletin of the Center for Children's Books. It follows rebellious fairy Beckan, who gets mixed up in a war between fairies, gnomes, and 'tightropers', a mysterious fantasy people who invade the city walking on tightropes in the sky. Her sixth novel, A History of Glitter and Blood, was published by Chronicle in 2016. It tells the story of black bisexual ex-ballerina Etta, who struggles with fitting in and applies to a New York art school. Her fifth novel, Not Otherwise Specified, was published by Simon Pulse in 2015.

It received a starred review from Kirkus Reviews and Booklist. Moskowitz' fourth novel, Teeth, about a teen moving to a remote island and befriending two mysterious teens with dark secrets, was published by Simon Pulse in 2013. Her third novel, Gone, Gone, Gone, set one year after 9/11, was published in 2012 by Simon Pulse. Her sophomore novel, Invincible Summer, told over four summers dealing with the divorce of the main character's parents and summer romance, was published by Simon Pulse in 2011. Break was on was on the ALA's 2010 list of Popular Paperbacks for Young Adults and received a starred review from Booklist. Moskowitz' debut young adult novel Break, about a boy on a mission to break every bone in his body, was published in 2009 by Simon Pulse.

On the Jellicoe Road, When You Reach Me, The Year of Secret Assignments, and My Heartbeat are among Moskowitz's favorite books. Her first novel, Break, was published while she was a junior in high school. Young adult fiction, middle grade fiction

Break by hannah moskowitz